1010101111021 has 8 divisors (see below), whose sum is σ = 1069593103800. Its totient is φ = 950617371648.

The previous prime is 1010101111013. The next prime is 1010101111039. The reversal of 1010101111021 is 1201111010101.

It can be written as a sum of positive squares in 4 ways, for example, as 631524249225 + 378576861796 = 794685^2 + 615286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1010101111021 - 2³ = 1010101111013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010101110989 and 1010101111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010101111051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1810486 + ... + 2301751.

It is an arithmetic number, because the mean of its divisors is an integer number (133699137975).

Almost surely, 2^{1010101111021} is an apocalyptic number.

It is an amenable number.

1010101111021 is a deficient number, since it is larger than the sum of its proper divisors (59491992779).

1010101111021 is a wasteful number, since it uses less digits than its factorization.

1010101111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126703.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1010101111021 its reverse (1201111010101), we get a palindrome (2211212121122).

The spelling of 1010101111021 in words is "one trillion, ten billion, one hundred one million, one hundred eleven thousand, twenty-one".