20021142050 has 96 divisors (see below), whose sum is σ = 45881480064. Its totient is φ = 6329664000.

The previous prime is 20021142049. The next prime is 20021142067. The reversal of 20021142050 is 5024112002.

It is a super-2 number, since 2×20021142050² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6008885 + ... + 6012215.

It is an arithmetic number, because the mean of its divisors is an integer number (477932084).

Almost surely, 2^20021142050 is an apocalyptic number.

20021142050 is an abundant number, since it is smaller than the sum of its proper divisors (25860338014).

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

20021142050 is a wasteful number, since it uses less digits than its factorization.

20021142050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684 (or 4679 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 20021142050 its reverse (5024112002), we get a palindrome (25045254052).

The spelling of 20021142050 in words is "twenty billion, twenty-one million, one hundred forty-two thousand, fifty".