121021021000010 has 32 divisors (see below), whose sum is σ = 218264656661712. Its totient is φ = 48313623121920.

The previous prime is 121021021000003. The next prime is 121021021000021. The reversal of 121021021000010 is 10000120120121.

It can be written as a sum of positive squares in 8 ways, for example, as 17756219998969 + 103264801001041 = 4213813^2 + 10161929^2 .

It is a super-2 number, since 2×121021021000010² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021020999955 and 121021021000000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11328362 + ... + 19245098.

Almost surely, 2^{121021021000010} is an apocalyptic number.

121021021000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021021000010 is a deficient number, since it is larger than the sum of its proper divisors (97243635661702).

121021021000010 is a wasteful number, since it uses less digits than its factorization.

121021021000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7919738.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121021021000010 its reverse (10000120120121), we get a palindrome (131021141120131).

The spelling of 121021021000010 in words is "one hundred twenty-one trillion, twenty-one billion, twenty-one million, ten", and thus it is an aban number.