72220611200020 has 48 divisors (see below), whose sum is σ = 160652959746048. Its totient is φ = 27177370841600.

The previous prime is 72220611200009. The next prime is 72220611200027. The reversal of 72220611200020 is 2000211602227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72220611200027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44375812 + ... + 45974491.

It is an arithmetic number, because the mean of its divisors is an integer number (3346936661376).

Almost surely, 2^{72220611200020} is an apocalyptic number.

It is an amenable number.

72220611200020 is an abundant number, since it is smaller than the sum of its proper divisors (88432348546028).

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

72220611200020 is a wasteful number, since it uses less digits than its factorization.

72220611200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90352680 (or 90352678 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 72220611200020 its reverse (2000211602227), we get a palindrome (74220822802247).

The spelling of 72220611200020 in words is "seventy-two trillion, two hundred twenty billion, six hundred eleven million, two hundred thousand, twenty".