1220101100212 has 24 divisors (see below), whose sum is σ = 2154294765000. Its totient is φ = 604606550016.

The previous prime is 1220101100191. The next prime is 1220101100227. The reversal of 1220101100212 is 2120011010221.

It can be written as a sum of positive squares in 4 ways, for example, as 5441422756 + 1214659677456 = 73766^2 + 1102116^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220101100192 and 1220101100201.

It is a congruent number.

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, 2012073 + ... + 2547280.

It is an arithmetic number, because the mean of its divisors is an integer number (89762281875).

Almost surely, 2^{1220101100212} is an apocalyptic number.

It is an amenable number.

1220101100212 is a deficient number, since it is larger than the sum of its proper divisors (934193664788).

1220101100212 is a wasteful number, since it uses less digits than its factorization.

1220101100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4559955 (or 4559953 counting only the distinct ones).

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

Adding to 1220101100212 its reverse (2120011010221), we get a palindrome (3340112110433).

The spelling of 1220101100212 in words is "one trillion, two hundred twenty billion, one hundred one million, one hundred thousand, two hundred twelve".