221400201231329 has 16 divisors (see below), whose sum is σ = 224723370936960. Its totient is φ = 218082739230720.

The previous prime is 221400201231301. The next prime is 221400201231347. The reversal of 221400201231329 is 923132102004122.

221400201231329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221400201231329 is a prime.

It is a super-2 number, since 2×221400201231329² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221400201231295 and 221400201231304.

It is not an unprimeable number, because it can be changed into a prime (221400201231389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2386014467 + ... + 2386107255.

It is an arithmetic number, because the mean of its divisors is an integer number (14045210683560).

Almost surely, 2^{221400201231329} is an apocalyptic number.

It is an amenable number.

221400201231329 is a deficient number, since it is larger than the sum of its proper divisors (3323169705631).

221400201231329 is a wasteful number, since it uses less digits than its factorization.

221400201231329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123160.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 221400201231329 in words is "two hundred twenty-one trillion, four hundred billion, two hundred one million, two hundred thirty-one thousand, three hundred twenty-nine".