211010101210 has 32 divisors (see below), whose sum is σ = 381728849040. Its totient is φ = 83979936768.

The previous prime is 211010101193. The next prime is 211010101231. The reversal of 211010101210 is 12101010112.

It can be written as a sum of positive squares in 8 ways, for example, as 92318137921 + 118691963289 = 303839^2 + 344517^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3526704 + ... + 3586036.

Almost surely, 2^211010101210 is an apocalyptic number.

211010101210 is a deficient number, since it is larger than the sum of its proper divisors (170718747830).

211010101210 is a wasteful number, since it uses less digits than its factorization.

211010101210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61122.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 211010101210 its reverse (12101010112), we get a palindrome (223111111322).

The spelling of 211010101210 in words is "two hundred eleven billion, ten million, one hundred one thousand, two hundred ten".