211220201312 has 48 divisors (see below), whose sum is σ = 417286763712. Its totient is φ = 105242941440.

The previous prime is 211220201279. The next prime is 211220201333. The reversal of 211220201312 is 213102022112.

It is a super-2 number, since 2×211220201312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28800398 + ... + 28807730.

It is an arithmetic number, because the mean of its divisors is an integer number (8693474244).

Almost surely, 2^211220201312 is an apocalyptic number.

It is an amenable number.

211220201312 is a deficient number, since it is larger than the sum of its proper divisors (206066562400).

211220201312 is a wasteful number, since it uses less digits than its factorization.

211220201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351 (or 10343 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 211220201312 its reverse (213102022112), we get a palindrome (424322223424).

The spelling of 211220201312 in words is "two hundred eleven billion, two hundred twenty million, two hundred one thousand, three hundred twelve".