20212234128 has 40 divisors (see below), whose sum is σ = 58016599200. Its totient is φ = 6737411232.

The previous prime is 20212234127. The next prime is 20212234129. The reversal of 20212234128 is 82143221202.

20212234128 is a `hidden beast` number, since 2 + 0 + 21 + 223 + 412 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20212234127) and next prime (20212234129).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20212234127) 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, 23393358 + ... + 23394221.

It is an arithmetic number, because the mean of its divisors is an integer number (1450414980).

Almost surely, 2^20212234128 is an apocalyptic number.

It is an amenable number.

20212234128 is an abundant number, since it is smaller than the sum of its proper divisors (37804365072).

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

20212234128 is a wasteful number, since it uses less digits than its factorization.

20212234128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46787596 (or 46787584 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 20212234128 in words is "twenty billion, two hundred twelve million, two hundred thirty-four thousand, one hundred twenty-eight".