211211022102 has 32 divisors (see below), whose sum is σ = 427066255872. Its totient is φ = 69631788384.

The previous prime is 211211022079. The next prime is 211211022109. The reversal of 211211022102 is 201220112112.

It is a super-2 number, since 2×211211022102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211022109) 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, 125203 + ... + 661889.

It is an arithmetic number, because the mean of its divisors is an integer number (13345820496).

Almost surely, 2^211211022102 is an apocalyptic number.

211211022102 is an abundant number, since it is smaller than the sum of its proper divisors (215855233770).

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

211211022102 is a wasteful number, since it uses less digits than its factorization.

211211022102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537412.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211211022102 its reverse (201220112112), we get a palindrome (412431134214).

The spelling of 211211022102 in words is "two hundred eleven billion, two hundred eleven million, twenty-two thousand, one hundred two".