211205151102 has 64 divisors (see below), whose sum is σ = 463956159744. Its totient is φ = 63565904640.

The previous prime is 211205151013. The next prime is 211205151127. The reversal of 211205151102 is 201151502112.

It is a congruent number.

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, 7618338 + ... + 7646010.

It is an arithmetic number, because the mean of its divisors is an integer number (7249314996).

Almost surely, 2^211205151102 is an apocalyptic number.

211205151102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211205151102 is an abundant number, since it is smaller than the sum of its proper divisors (252751008642).

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

211205151102 is a wasteful number, since it uses less digits than its factorization.

211205151102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28473.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 211205151102 its reverse (201151502112), we get a palindrome (412356653214).

The spelling of 211205151102 in words is "two hundred eleven billion, two hundred five million, one hundred fifty-one thousand, one hundred two".