1211200220022 has 64 divisors (see below), whose sum is σ = 2762772364800. Its totient is φ = 350681393664.

The previous prime is 1211200219973. The next prime is 1211200220047. The reversal of 1211200220022 is 2200220021121.

1211200220022 is a modest number, since divided by 220022 gives 12112 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1211200219983 and 1211200220010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6408229 + ... + 6594527.

It is an arithmetic number, because the mean of its divisors is an integer number (43168318200).

Almost surely, 2^{1211200220022} is an apocalyptic number.

1211200220022 is an abundant number, since it is smaller than the sum of its proper divisors (1551572144778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211200220022 is a wasteful number, since it uses less digits than its factorization.

1211200220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191237.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1211200220022 its reverse (2200220021121), we get a palindrome (3411420241143).

The spelling of 1211200220022 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred twenty thousand, twenty-two".