1220211100122 has 32 divisors (see below), whose sum is σ = 2789105260032. Its totient is φ = 348625328304.

The previous prime is 1220211100109. The next prime is 1220211100123. The reversal of 1220211100122 is 2210011120221.

It is not an unprimeable number, because it can be changed into a prime (1220211100123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2342353 + ... + 2815499.

It is an arithmetic number, because the mean of its divisors is an integer number (87159539376).

Almost surely, 2^{1220211100122} is an apocalyptic number.

1220211100122 is an abundant number, since it is smaller than the sum of its proper divisors (1568894159910).

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

1220211100122 is a wasteful number, since it uses less digits than its factorization.

1220211100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534562.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220211100122 its reverse (2210011120221), we get a palindrome (3430222220343).

The spelling of 1220211100122 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred thousand, one hundred twenty-two".