20012001011010 has 64 divisors (see below), whose sum is σ = 55086798504960. Its totient is φ = 5164387355520.

The previous prime is 20012001010949. The next prime is 20012001011039. The reversal of 20012001011010 is 1011010021002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20012001010983 and 20012001011001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1195451667 + ... + 1195468406.

It is an arithmetic number, because the mean of its divisors is an integer number (860731226640).

Almost surely, 2^{20012001011010} is an apocalyptic number.

20012001011010 is an abundant number, since it is smaller than the sum of its proper divisors (35074797493950).

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

20012001011010 is a wasteful number, since it uses less digits than its factorization.

20012001011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390920120 (or 2390920114 counting only the distinct ones).

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

Adding to 20012001011010 its reverse (1011010021002), we get a palindrome (21023011032012).

The spelling of 20012001011010 in words is "twenty trillion, twelve billion, one million, eleven thousand, ten".