1211210100022 has 64 divisors (see below), whose sum is σ = 2050907040000. Its totient is φ = 532586815488.

The previous prime is 1211210100017. The next prime is 1211210100049. The reversal of 1211210100022 is 2200010121121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1211210099975 and 1211210100011.

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, 116088918 + ... + 116099350.

It is an arithmetic number, because the mean of its divisors is an integer number (32045422500).

Almost surely, 2^{1211210100022} is an apocalyptic number.

1211210100022 is a deficient number, since it is larger than the sum of its proper divisors (839696939978).

1211210100022 is a wasteful number, since it uses less digits than its factorization.

1211210100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12505.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1211210100022 its reverse (2200010121121), we get a palindrome (3411220221143).

The spelling of 1211210100022 in words is "one trillion, two hundred eleven billion, two hundred ten million, one hundred thousand, twenty-two".