10122121021021 has 16 divisors (see below), whose sum is σ = 10428118179840. Its totient is φ = 9820038533760.

The previous prime is 10122121021009. The next prime is 10122121021069. The reversal of 10122121021021 is 12012012122101.

It is not a de Polignac number, because 10122121021021 - 2³³ = 10113531086429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10122121020986 and 10122121021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122121027021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5987991 + ... + 7490011.

It is an arithmetic number, because the mean of its divisors is an integer number (651757386240).

Almost surely, 2^{10122121021021} is an apocalyptic number.

It is an amenable number.

10122121021021 is a deficient number, since it is larger than the sum of its proper divisors (305997158819).

10122121021021 is a wasteful number, since it uses less digits than its factorization.

10122121021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503324.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10122121021021 its reverse (12012012122101), we get a palindrome (22134133143122).

The spelling of 10122121021021 in words is "ten trillion, one hundred twenty-two billion, one hundred twenty-one million, twenty-one thousand, twenty-one".