2211220121012 has 12 divisors (see below), whose sum is σ = 4422440242080. Its totient is φ = 947665766136.

The previous prime is 2211220120979. The next prime is 2211220121021. The reversal of 2211220121012 is 2101210221122.

2211220121012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39486073562 + ... + 39486073617.

It is an arithmetic number, because the mean of its divisors is an integer number (368536686840).

Almost surely, 2^{2211220121012} is an apocalyptic number.

It is an amenable number.

2211220121012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2211220121012 is a wasteful number, since it uses less digits than its factorization.

2211220121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78972147190 (or 78972147188 counting only the distinct ones).

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

Adding to 2211220121012 its reverse (2101210221122), we get a palindrome (4312430342134).

The spelling of 2211220121012 in words is "two trillion, two hundred eleven billion, two hundred twenty million, one hundred twenty-one thousand, twelve".