72021102 has 16 divisors (see below), whose sum is σ = 145441920. Its totient is φ = 23773752.

The previous prime is 72021097. The next prime is 72021107. The reversal of 72021102 is 20112027.

It is an interprime number because it is at equal distance from previous prime (72021097) and next prime (72021107).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72021107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57652 + ... + 58887.

It is an arithmetic number, because the mean of its divisors is an integer number (9090120).

Almost surely, 2^72021102 is an apocalyptic number.

72021102 is an abundant number, since it is smaller than the sum of its proper divisors (73420818).

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

72021102 is a wasteful number, since it uses less digits than its factorization.

72021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116647.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 72021102 is about 8486.5247304182. The cubic root of 72021102 is about 416.0574031672.

Adding to 72021102 its reverse (20112027), we get a palindrome (92133129).

The spelling of 72021102 in words is "seventy-two million, twenty-one thousand, one hundred two".