12121100021010 has 16 divisors (see below), whose sum is σ = 29090640050496. Its totient is φ = 3232293338928.

The previous prime is 12121100020999. The next prime is 12121100021021. The reversal of 12121100021010 is 1012000112121.

It is an interprime number because it is at equal distance from previous prime (12121100020999) and next prime (12121100021021).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202018333654 + ... + 202018333713.

It is an arithmetic number, because the mean of its divisors is an integer number (1818165003156).

Almost surely, 2^{12121100021010} is an apocalyptic number.

12121100021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121100021010 is an abundant number, since it is smaller than the sum of its proper divisors (16969540029486).

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

12121100021010 is a wasteful number, since it uses less digits than its factorization.

12121100021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404036667377.

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

Adding to 12121100021010 its reverse (1012000112121), we get a palindrome (13133100133131).

The spelling of 12121100021010 in words is "twelve trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, ten".