20235442012 has 12 divisors (see below), whose sum is σ = 35482993000. Its totient is φ = 10097444016.

The previous prime is 20235442001. The next prime is 20235442061. The reversal of 20235442012 is 21024453202.

It is a super-2 number, since 2×20235442012² (a number of 21 digits) contains 22 as substring.

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, 5067003 + ... + 5070994.

Almost surely, 2^20235442012 is an apocalyptic number.

It is an amenable number.

20235442012 is a deficient number, since it is larger than the sum of its proper divisors (15247550988).

20235442012 is a wasteful number, since it uses less digits than its factorization.

20235442012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138500 (or 10138498 counting only the distinct ones).

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

Adding to 20235442012 its reverse (21024453202), we get a palindrome (41259895214).

The spelling of 20235442012 in words is "twenty billion, two hundred thirty-five million, four hundred forty-two thousand, twelve".