211012121222 has 32 divisors (see below), whose sum is σ = 367719631104. Its totient is φ = 88938064800.

The previous prime is 211012121183. The next prime is 211012121231. The reversal of 211012121222 is 222121210112.

It is a super-2 number, since 2×211012121222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211012121222.

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, 7606397 + ... + 7634087.

It is an arithmetic number, because the mean of its divisors is an integer number (11491238472).

Almost surely, 2^211012121222 is an apocalyptic number.

211012121222 is a deficient number, since it is larger than the sum of its proper divisors (156707509882).

211012121222 is a wasteful number, since it uses less digits than its factorization.

211012121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36684.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211012121222 its reverse (222121210112), we get a palindrome (433133331334).

The spelling of 211012121222 in words is "two hundred eleven billion, twelve million, one hundred twenty-one thousand, two hundred twenty-two".