121020200102010 has 128 divisors (see below), whose sum is σ = 325320387194880. Its totient is φ = 28557462643200.

The previous prime is 121020200101873. The next prime is 121020200102071. The reversal of 121020200102010 is 10201002020121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4247782 + ... + 16127121.

It is an arithmetic number, because the mean of its divisors is an integer number (2541565524960).

Almost surely, 2^{121020200102010} is an apocalyptic number.

121020200102010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020200102010 is an abundant number, since it is smaller than the sum of its proper divisors (204300187092870).

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

121020200102010 is a wasteful number, since it uses less digits than its factorization.

121020200102010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20375404.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121020200102010 its reverse (10201002020121), we get a palindrome (131221202122131).

The spelling of 121020200102010 in words is "one hundred twenty-one trillion, twenty billion, two hundred million, one hundred two thousand, ten".