20211567042 has 16 divisors (see below), whose sum is σ = 40569069312. Its totient is φ = 6712866480.

The previous prime is 20211567041. The next prime is 20211567043. The reversal of 20211567042 is 24076511202.

It is an interprime number because it is at equal distance from previous prime (20211567041) and next prime (20211567043).

It is not an unprimeable number, because it can be changed into a prime (20211567041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6078834 + ... + 6082157.

It is an arithmetic number, because the mean of its divisors is an integer number (2535566832).

Almost surely, 2^20211567042 is an apocalyptic number.

20211567042 is an abundant number, since it is smaller than the sum of its proper divisors (20357502270).

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

20211567042 is a wasteful number, since it uses less digits than its factorization.

20211567042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12161273.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 20211567042 in words is "twenty billion, two hundred eleven million, five hundred sixty-seven thousand, forty-two".