29021211136 has 40 divisors (see below), whose sum is σ = 58637357460. Its totient is φ = 14347542528.

The previous prime is 29021211127. The next prime is 29021211161. The reversal of 29021211136 is 63111212092.

It can be written as a sum of positive squares in 2 ways, for example, as 28987105536 + 34105600 = 170256^2 + 5840^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272871 + ... + 364006.

Almost surely, 2^29021211136 is an apocalyptic number.

It is an amenable number.

29021211136 is an abundant number, since it is smaller than the sum of its proper divisors (29616146324).

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

29021211136 is an frugal number, since it uses more digits than its factorization.

29021211136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636984 (or 636968 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 29021211136 in words is "twenty-nine billion, twenty-one million, two hundred eleven thousand, one hundred thirty-six".