1210012111211 has 16 divisors (see below), whose sum is σ = 1265918220000. Its totient is φ = 1155053872896.

The previous prime is 1210012111201. The next prime is 1210012111261. The reversal of 1210012111211 is 1121112100121.

It is a cyclic number.

It is not a de Polignac number, because 1210012111211 - 2²² = 1210007916907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210012111201) 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, 52922300 + ... + 52945158.

It is an arithmetic number, because the mean of its divisors is an integer number (79119888750).

Almost surely, 2^{1210012111211} is an apocalyptic number.

1210012111211 is a deficient number, since it is larger than the sum of its proper divisors (55906108789).

1210012111211 is a wasteful number, since it uses less digits than its factorization.

1210012111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486.

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

Adding to 1210012111211 its reverse (1121112100121), we get a palindrome (2331124211332).

It can be divided in two parts, 12100121 and 11211, that multiplied together give a palindrome (135654456531).

The spelling of 1210012111211 in words is "one trillion, two hundred ten billion, twelve million, one hundred eleven thousand, two hundred eleven".