72021021107022 has 64 divisors (see below), whose sum is σ = 173715149045760. Its totient is φ = 21985823496672.

The previous prime is 72021021106987. The next prime is 72021021107027. The reversal of 72021021107022 is 22070112012027.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72021021107027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403824418 + ... + 404002725.

It is an arithmetic number, because the mean of its divisors is an integer number (2714299203840).

Almost surely, 2^{72021021107022} is an apocalyptic number.

72021021107022 is an abundant number, since it is smaller than the sum of its proper divisors (101694127938738).

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

72021021107022 is a wasteful number, since it uses less digits than its factorization.

72021021107022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807827294 (or 807827288 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

Adding to 72021021107022 its reverse (22070112012027), we get a palindrome (94091133119049).

The spelling of 72021021107022 in words is "seventy-two trillion, twenty-one billion, twenty-one million, one hundred seven thousand, twenty-two".