211421401412 has 48 divisors (see below), whose sum is σ = 417949120512. Its totient is φ = 92847765120.

The previous prime is 211421401333. The next prime is 211421401423. The reversal of 211421401412 is 214104124112.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 234323 + ... + 691194.

It is an arithmetic number, because the mean of its divisors is an integer number (8707273344).

Almost surely, 2^211421401412 is an apocalyptic number.

It is an amenable number.

211421401412 is a deficient number, since it is larger than the sum of its proper divisors (206527719100).

211421401412 is a wasteful number, since it uses less digits than its factorization.

211421401412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925748 (or 925746 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211421401412 its reverse (214104124112), we get a palindrome (425525525524).

The spelling of 211421401412 in words is "two hundred eleven billion, four hundred twenty-one million, four hundred one thousand, four hundred twelve".