20022151520 has 48 divisors (see below), whose sum is σ = 54059812128. Its totient is φ = 6864737280.

The previous prime is 20022151511. The next prime is 20022151543. The reversal of 20022151520 is 2515122002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20022151492 and 20022151501.

It is a congruent number.

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, 8937341 + ... + 8939580.

It is an arithmetic number, because the mean of its divisors is an integer number (1126246086).

Almost surely, 2^20022151520 is an apocalyptic number.

20022151520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022151520 is an abundant number, since it is smaller than the sum of its proper divisors (34037660608).

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

20022151520 is a wasteful number, since it uses less digits than its factorization.

20022151520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17876943 (or 17876935 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

Adding to 20022151520 its reverse (2515122002), we get a palindrome (22537273522).

The spelling of 20022151520 in words is "twenty billion, twenty-two million, one hundred fifty-one thousand, five hundred twenty".