211333300122 has 64 divisors (see below), whose sum is σ = 490563707904. Its totient is φ = 59444461440.

The previous prime is 211333300117. The next prime is 211333300147. The reversal of 211333300122 is 221003333112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1614097 + ... + 1740107.

It is an arithmetic number, because the mean of its divisors is an integer number (7665057936).

Almost surely, 2^211333300122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211333300122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245281853952).

211333300122 is an abundant number, since it is smaller than the sum of its proper divisors (279230407782).

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

211333300122 is a wasteful number, since it uses less digits than its factorization.

211333300122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126643.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 211333300122 its reverse (221003333112), we get a palindrome (432336633234).

The spelling of 211333300122 in words is "two hundred eleven billion, three hundred thirty-three million, three hundred thousand, one hundred twenty-two".