30722156212 has 24 divisors (see below), whose sum is σ = 58817570112. Its totient is φ = 13925049600.

The previous prime is 30722156197. The next prime is 30722156219. The reversal of 30722156212 is 21265122703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30722156219) 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, 973464 + ... + 1004527.

It is an arithmetic number, because the mean of its divisors is an integer number (2450732088).

Almost surely, 2^30722156212 is an apocalyptic number.

It is an amenable number.

30722156212 is a deficient number, since it is larger than the sum of its proper divisors (28095413900).

30722156212 is a wasteful number, since it uses less digits than its factorization.

30722156212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978359 (or 1978357 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 30722156212 its reverse (21265122703), we get a palindrome (51987278915).

The spelling of 30722156212 in words is "thirty billion, seven hundred twenty-two million, one hundred fifty-six thousand, two hundred twelve".