20345202124 has 12 divisors (see below), whose sum is σ = 38342881024. Its totient is φ = 9390093264.

The previous prime is 20345202103. The next prime is 20345202131. The reversal of 20345202124 is 42120254302.

It is a super-2 number, since 2×20345202124² (a number of 21 digits) contains 22 as substring.

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, 195626892 + ... + 195626995.

Almost surely, 2^20345202124 is an apocalyptic number.

It is an amenable number.

20345202124 is a deficient number, since it is larger than the sum of its proper divisors (17997678900).

20345202124 is a wasteful number, since it uses less digits than its factorization.

20345202124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391253904 (or 391253902 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20345202124 its reverse (42120254302), we get a palindrome (62465456426).

The spelling of 20345202124 in words is "twenty billion, three hundred forty-five million, two hundred two thousand, one hundred twenty-four".