20211012124 has 12 divisors (see below), whose sum is σ = 35400008448. Its totient is φ = 10096724000.

The previous prime is 20211012119. The next prime is 20211012169. The reversal of 20211012124 is 42121011202.

It is a super-2 number, since 2×20211012124² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20211012098 and 20211012107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2190337 + ... + 2199544.

It is an arithmetic number, because the mean of its divisors is an integer number (2950000704).

Almost surely, 2^20211012124 is an apocalyptic number.

It is an amenable number.

20211012124 is a deficient number, since it is larger than the sum of its proper divisors (15188996324).

20211012124 is a wasteful number, since it uses less digits than its factorization.

20211012124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391036 (or 4391034 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211012124 its reverse (42121011202), we get a palindrome (62332023326).

The spelling of 20211012124 in words is "twenty billion, two hundred eleven million, twelve thousand, one hundred twenty-four".