1012021012008 has 80 divisors (see below), whose sum is σ = 2876903414880. Its totient is φ = 332305392672.

The previous prime is 1012021012001. The next prime is 1012021012099. The reversal of 1012021012008 is 8002101202101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1012021012001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11611516 + ... + 11698347.

It is an arithmetic number, because the mean of its divisors is an integer number (35961292686).

Almost surely, 2^{1012021012008} is an apocalyptic number.

1012021012008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1012021012008 is an abundant number, since it is smaller than the sum of its proper divisors (1864882402872).

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

1012021012008 is a wasteful number, since it uses less digits than its factorization.

1012021012008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23309948 (or 23309935 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1012021012008 its reverse (8002101202101), we get a palindrome (9014122214109).

The spelling of 1012021012008 in words is "one trillion, twelve billion, twenty-one million, twelve thousand, eight".