1211021122202 has 16 divisors (see below), whose sum is σ = 1852135274952. Its totient is φ = 593705325120.

The previous prime is 1211021122111. The next prime is 1211021122211. The reversal of 1211021122202 is 2022211201121.

It can be written as a sum of positive squares in 4 ways, for example, as 140543261881 + 1070477860321 = 374891^2 + 1034639^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15618113 + ... + 15695460.

Almost surely, 2^{1211021122202} is an apocalyptic number.

1211021122202 is a deficient number, since it is larger than the sum of its proper divisors (641114152750).

1211021122202 is a wasteful number, since it uses less digits than its factorization.

1211021122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31313953.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211021122202 its reverse (2022211201121), we get a palindrome (3233232323323).

The spelling of 1211021122202 in words is "one trillion, two hundred eleven billion, twenty-one million, one hundred twenty-two thousand, two hundred two".