20211541512 has 32 divisors (see below), whose sum is σ = 50552916480. Its totient is φ = 6733972160.

The previous prime is 20211541501. The next prime is 20211541547. The reversal of 20211541512 is 21514511202.

It is a happy number.

It is a super-2 number, since 2×20211541512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148803 + ... + 250130.

It is an arithmetic number, because the mean of its divisors is an integer number (1579778640).

Almost surely, 2^20211541512 is an apocalyptic number.

It is an amenable number.

20211541512 is an abundant number, since it is smaller than the sum of its proper divisors (30341374968).

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

20211541512 is a wasteful number, since it uses less digits than its factorization.

20211541512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401053 (or 401049 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 20211541512 in words is "twenty billion, two hundred eleven million, five hundred forty-one thousand, five hundred twelve".