121021012100010 has 64 divisors (see below), whose sum is σ = 318032913409920. Its totient is φ = 29229362369280.

The previous prime is 121021012099907. The next prime is 121021012100017. The reversal of 121021012100010 is 10001210120121.

It is not an unprimeable number, because it can be changed into a prime (121021012100017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 681566137 + ... + 681743676.

It is an arithmetic number, because the mean of its divisors is an integer number (4969264272030).

Almost surely, 2^{121021012100010} is an apocalyptic number.

121021012100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121021012100010 is an abundant number, since it is smaller than the sum of its proper divisors (197011901309910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121021012100010 is a wasteful number, since it uses less digits than its factorization.

121021012100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363310103.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121021012100010 its reverse (10001210120121), we get a palindrome (131022222220131).

It can be divided in two parts, 1210210 and 12100010, that added together give a triangular number (13310220 = T₅₁₅₉).

The spelling of 121021012100010 in words is "one hundred twenty-one trillion, twenty-one billion, twelve million, one hundred thousand, ten".