11222101221220 has 24 divisors (see below), whose sum is σ = 24806750068800. Its totient is φ = 4252585725792.

The previous prime is 11222101221217. The next prime is 11222101221347. The reversal of 11222101221220 is 2212210122211.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 14765922280 + ... + 14765923039.

It is an arithmetic number, because the mean of its divisors is an integer number (1033614586200).

Almost surely, 2^{11222101221220} is an apocalyptic number.

11222101221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222101221220 is an abundant number, since it is smaller than the sum of its proper divisors (13584648847580).

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

11222101221220 is a wasteful number, since it uses less digits than its factorization.

11222101221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29531845347 (or 29531845345 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11222101221220 its reverse (2212210122211), we get a palindrome (13434311343431).

The spelling of 11222101221220 in words is "eleven trillion, two hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, two hundred twenty".