20012011522 has 32 divisors (see below), whose sum is σ = 31092647040. Its totient is φ = 9653508480.

The previous prime is 20012011517. The next prime is 20012011553. The reversal of 20012011522 is 22511021002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012011496 and 20012011505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8554629 + ... + 8556967.

It is an arithmetic number, because the mean of its divisors is an integer number (971645220).

Almost surely, 2^20012011522 is an apocalyptic number.

20012011522 is a deficient number, since it is larger than the sum of its proper divisors (11080635518).

20012011522 is a wasteful number, since it uses less digits than its factorization.

20012011522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 20012011522 its reverse (22511021002), we get a palindrome (42523032524).

The spelling of 20012011522 in words is "twenty billion, twelve million, eleven thousand, five hundred twenty-two".