1211100020022 has 64 divisors (see below), whose sum is σ = 2493490728960. Its totient is φ = 391984804224.

The previous prime is 1211100019981. The next prime is 1211100020041. The reversal of 1211100020022 is 2200200011121.

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, 29893063 + ... + 29933549.

It is an arithmetic number, because the mean of its divisors is an integer number (38960792640).

Almost surely, 2^{1211100020022} is an apocalyptic number.

1211100020022 is an abundant number, since it is smaller than the sum of its proper divisors (1282390708938).

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

1211100020022 is a wasteful number, since it uses less digits than its factorization.

1211100020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41517.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1211100020022 its reverse (2200200011121), we get a palindrome (3411300031143).

The spelling of 1211100020022 in words is "one trillion, two hundred eleven billion, one hundred million, twenty thousand, twenty-two".