1021200120022 has 16 divisors (see below), whose sum is σ = 1635131404800. Its totient is φ = 476913323880.

The previous prime is 1021200120019. The next prime is 1021200120071. The reversal of 1021200120022 is 2200210021201.

It is a happy number.

1021200120022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1021200119984 and 1021200120011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189248622 + ... + 189254017.

It is an arithmetic number, because the mean of its divisors is an integer number (102195712800).

Almost surely, 2^{1021200120022} is an apocalyptic number.

1021200120022 is a deficient number, since it is larger than the sum of its proper divisors (613931284778).

1021200120022 is a wasteful number, since it uses less digits than its factorization.

1021200120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378502731.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1021200120022 its reverse (2200210021201), we get a palindrome (3221410141223).

The spelling of 1021200120022 in words is "one trillion, twenty-one billion, two hundred million, one hundred twenty thousand, twenty-two".