211421004392 has 64 divisors (see below), whose sum is σ = 437216693760. Its totient is φ = 95226566400.

The previous prime is 211421004329. The next prime is 211421004481. The reversal of 211421004392 is 293400124112.

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, 5261417 + ... + 5301447.

It is an arithmetic number, because the mean of its divisors is an integer number (6831510840).

Almost surely, 2^211421004392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211421004392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218608346880).

211421004392 is an abundant number, since it is smaller than the sum of its proper divisors (225795689368).

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

211421004392 is a wasteful number, since it uses less digits than its factorization.

211421004392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41274 (or 41270 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 211421004392 in words is "two hundred eleven billion, four hundred twenty-one million, four thousand, three hundred ninety-two".