211220201122 has 32 divisors (see below), whose sum is σ = 362876661504. Its totient is φ = 90326880000.

The previous prime is 211220201111. The next prime is 211220201123. The reversal of 211220201122 is 221102022112.

It is a happy number.

It is a super-2 number, since 2×211220201122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220201096 and 211220201105.

It is not an unprimeable number, because it can be changed into a prime (211220201123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20802747 + ... + 20812897.

It is an arithmetic number, because the mean of its divisors is an integer number (11339895672).

Almost surely, 2^211220201122 is an apocalyptic number.

211220201122 is a deficient number, since it is larger than the sum of its proper divisors (151656460382).

211220201122 is a wasteful number, since it uses less digits than its factorization.

211220201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13234.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211220201122 its reverse (221102022112), we get a palindrome (432322223234).

The spelling of 211220201122 in words is "two hundred eleven billion, two hundred twenty million, two hundred one thousand, one hundred twenty-two".