1211211110210 has 32 divisors (see below), whose sum is σ = 2206996561584. Its totient is φ = 478548000000.

The previous prime is 1211211110203. The next prime is 1211211110227. The reversal of 1211211110210 is 120111121121.

It can be written as a sum of positive squares in 8 ways, for example, as 759907962529 + 451303147681 = 871727^2 + 671791^2 .

It is a super-2 number, since 2×1211211110210² (a number of 25 digits) contains 22 as substring.

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, 999041 + ... + 1849460.

Almost surely, 2^{1211211110210} is an apocalyptic number.

1211211110210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211211110210 is a deficient number, since it is larger than the sum of its proper divisors (995785451374).

1211211110210 is a wasteful number, since it uses less digits than its factorization.

1211211110210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849030.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1211211110210 its reverse (120111121121), we get a palindrome (1331322231331).

The spelling of 1211211110210 in words is "one trillion, two hundred eleven billion, two hundred eleven million, one hundred ten thousand, two hundred ten".