1012001010120 has 96 divisors (see below), whose sum is σ = 3290498827200. Its totient is φ = 269744224896.

The previous prime is 1012001010113. The next prime is 1012001010127. The reversal of 1012001010120 is 210101002101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1012001010113) and next prime (1012001010127).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1012001010127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155061 + ... + 1431099.

It is an arithmetic number, because the mean of its divisors is an integer number (34276029450).

Almost surely, 2^{1012001010120} is an apocalyptic number.

1012001010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012001010120 is an abundant number, since it is smaller than the sum of its proper divisors (2278497817080).

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

1012001010120 is a wasteful number, since it uses less digits than its factorization.

1012001010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278259 (or 1278252 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1012001010120 its reverse (210101002101), we get a palindrome (1222102012221).

The spelling of 1012001010120 in words is "one trillion, twelve billion, one million, ten thousand, one hundred twenty".