121220010000010 has 32 divisors (see below), whose sum is σ = 231089850735552. Its totient is φ = 45624159018240.

The previous prime is 121220009999969. The next prime is 121220010000031. The reversal of 121220010000010 is 10000010022121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90028612 + ... + 91365151.

It is an arithmetic number, because the mean of its divisors is an integer number (7221557835486).

Almost surely, 2^{121220010000010} is an apocalyptic number.

121220010000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220010000010 is a deficient number, since it is larger than the sum of its proper divisors (109869840735542).

121220010000010 is a wasteful number, since it uses less digits than its factorization.

121220010000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181397718.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121220010000010 its reverse (10000010022121), we get a palindrome (131220020022131).

The spelling of 121220010000010 in words is "one hundred twenty-one trillion, two hundred twenty billion, ten million, ten", and thus it is an aban number.