10122121020021 has 16 divisors (see below), whose sum is σ = 13643977034688. Its totient is φ = 6674261414400.

The previous prime is 10122121020007. The next prime is 10122121020031. The reversal of 10122121020021 is 12002012122101.

It is not a de Polignac number, because 10122121020021 - 2¹³ = 10122121011829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122121020031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10613470 + ... + 11527791.

It is an arithmetic number, because the mean of its divisors is an integer number (852748564668).

Almost surely, 2^{10122121020021} is an apocalyptic number.

It is an amenable number.

10122121020021 is a deficient number, since it is larger than the sum of its proper divisors (3521856014667).

10122121020021 is a wasteful number, since it uses less digits than its factorization.

10122121020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22142932.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10122121020021 its reverse (12002012122101), we get a palindrome (22124133142122).

The spelling of 10122121020021 in words is "ten trillion, one hundred twenty-two billion, one hundred twenty-one million, twenty thousand, twenty-one".