12121000011010 has 160 divisors (see below), whose sum is σ = 24678813438720. Its totient is φ = 4283690400000.

The previous prime is 12121000010983. The next prime is 12121000011037. The reversal of 12121000011010 is 1011000012121.

It is an interprime number because it is at equal distance from previous prime (12121000010983) and next prime (12121000011037).

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1626757785 + ... + 1626765235.

It is an arithmetic number, because the mean of its divisors is an integer number (154242583992).

Almost surely, 2^{12121000011010} is an apocalyptic number.

12121000011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121000011010 is an abundant number, since it is smaller than the sum of its proper divisors (12557813427710).

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

12121000011010 is an equidigital number, since it uses as much as digits as its factorization.

12121000011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814 (or 7781 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12121000011010 its reverse (1011000012121), we get a palindrome (13132000023131).

The spelling of 12121000011010 in words is "twelve trillion, one hundred twenty-one billion, eleven thousand, ten".