1022020121 has 8 divisors (see below), whose sum is σ = 1055417088. Its totient is φ = 988650000.

The previous prime is 1022020099. The next prime is 1022020151. The reversal of 1022020121 is 1210202201.

It is a happy number.

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 1022020121 - 2²² = 1017825817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022020151) 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, 95711 + ... + 105851.

It is an arithmetic number, because the mean of its divisors is an integer number (131927136).

Almost surely, 2^1022020121 is an apocalyptic number.

It is an amenable number.

1022020121 is a deficient number, since it is larger than the sum of its proper divisors (33396967).

1022020121 is a wasteful number, since it uses less digits than its factorization.

1022020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13423.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1022020121 is about 31969.0494228402. The cubic root of 1022020121 is about 1007.2868137084.

Adding to 1022020121 its reverse (1210202201), we get a palindrome (2232222322).

The spelling of 1022020121 in words is "one billion, twenty-two million, twenty thousand, one hundred twenty-one".