211214554012 has 48 divisors (see below), whose sum is σ = 461428434432. Its totient is φ = 82184834880.

The previous prime is 211214554009. The next prime is 211214554021. The reversal of 211214554012 is 210455412112.

It is a super-2 number, since 2×211214554012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 205488 + ... + 681655.

It is an arithmetic number, because the mean of its divisors is an integer number (9613092384).

Almost surely, 2^211214554012 is an apocalyptic number.

211214554012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211214554012 is an abundant number, since it is smaller than the sum of its proper divisors (250213880420).

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

211214554012 is a wasteful number, since it uses less digits than its factorization.

211214554012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887938 (or 887936 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 211214554012 its reverse (210455412112), we get a palindrome (421669966124).

The spelling of 211214554012 in words is "two hundred eleven billion, two hundred fourteen million, five hundred fifty-four thousand, twelve".