40029601221 has 32 divisors (see below), whose sum is σ = 60603379200. Its totient is φ = 26102004480.

The previous prime is 40029601207. The next prime is 40029601243. The reversal of 40029601221 is 12210692004.

It is not a de Polignac number, because 40029601221 - 2¹⁷ = 40029470149 is a prime.

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 (40029601621) 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, 2174785 + ... + 2193113.

It is an arithmetic number, because the mean of its divisors is an integer number (1893855600).

Almost surely, 2^40029601221 is an apocalyptic number.

It is an amenable number.

40029601221 is a deficient number, since it is larger than the sum of its proper divisors (20573777979).

40029601221 is a wasteful number, since it uses less digits than its factorization.

40029601221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20106 (or 20100 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 40029601221 in words is "forty billion, twenty-nine million, six hundred one thousand, two hundred twenty-one".