20122031240 has 32 divisors (see below), whose sum is σ = 45289877760. Its totient is φ = 8046091200.

The previous prime is 20122031239. The next prime is 20122031287. The reversal of 20122031240 is 4213022102.

It is a super-2 number, since 2×20122031240² (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 7 ways as a sum of consecutive naturals, for example, 36905 + ... + 203975.

It is an arithmetic number, because the mean of its divisors is an integer number (1415308680).

Almost surely, 2^20122031240 is an apocalyptic number.

20122031240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122031240 is an abundant number, since it is smaller than the sum of its proper divisors (25167846520).

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

20122031240 is a wasteful number, since it uses less digits than its factorization.

20122031240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170093 (or 170089 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20122031240 its reverse (4213022102), we get a palindrome (24335053342).

The spelling of 20122031240 in words is "twenty billion, one hundred twenty-two million, thirty-one thousand, two hundred forty".