211244172330 has 32 divisors (see below), whose sum is σ = 513094284864. Its totient is φ = 55653082496.

The previous prime is 211244172319. The next prime is 211244172341. The reversal of 211244172330 is 33271442112.

It is an interprime number because it is at equal distance from previous prime (211244172319) and next prime (211244172341).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42416019 + ... + 42420998.

It is an arithmetic number, because the mean of its divisors is an integer number (16034196402).

Almost surely, 2^211244172330 is an apocalyptic number.

211244172330 is an abundant number, since it is smaller than the sum of its proper divisors (301850112534).

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

211244172330 is a wasteful number, since it uses less digits than its factorization.

211244172330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84837110.

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 211244172330 in words is "two hundred eleven billion, two hundred forty-four million, one hundred seventy-two thousand, three hundred thirty".