211122111221002 has 4 divisors (see below), whose sum is σ = 316683166831506. Its totient is φ = 105561055610500.

The previous prime is 211122111220991. The next prime is 211122111221003. The reversal of 211122111221002 is 200122111221112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 125689413454641 + 85432697766361 = 11211129^2 + 9242981^2 .

It is not an unprimeable number, because it can be changed into a prime (211122111221003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780527805249 + ... + 52780527805252.

Almost surely, 2^{211122111221002} is an apocalyptic number.

211122111221002 is a deficient number, since it is larger than the sum of its proper divisors (105561055610504).

211122111221002 is a wasteful number, since it uses less digits than its factorization.

211122111221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105561055610503.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211122111221002 its reverse (200122111221112), we get a palindrome (411244222442114).

The spelling of 211122111221002 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, two".