2111211121210 has 32 divisors (see below), whose sum is σ = 3931727072400. Its totient is φ = 815259271680.

The previous prime is 2111211121207. The next prime is 2111211121231. The reversal of 2111211121210 is 121211121112.

It can be written as a sum of positive squares in 8 ways, for example, as 1122258440689 + 988952680521 = 1059367^2 + 994461^2 .

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, 1805470 + ... + 2735350.

Almost surely, 2^{2111211121210} is an apocalyptic number.

2111211121210 is a deficient number, since it is larger than the sum of its proper divisors (1820515951190).

2111211121210 is a wasteful number, since it uses less digits than its factorization.

2111211121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937746.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 2111211121210 its reverse (121211121112), we get a palindrome (2232422242322).

It can be divided in two parts, 211121 and 1121210, that added together give a palindrome (1332331).

The spelling of 2111211121210 in words is "two trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-one thousand, two hundred ten".