1220211022110 has 32 divisors (see below), whose sum is σ = 2933860252032. Its totient is φ = 324794739360.

The previous prime is 1220211022087. The next prime is 1220211022169. The reversal of 1220211022110 is 112201120221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1220211022110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37162476 + ... + 37195295.

It is an arithmetic number, because the mean of its divisors is an integer number (91683132876).

Almost surely, 2^{1220211022110} is an apocalyptic number.

1220211022110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220211022110 is an abundant number, since it is smaller than the sum of its proper divisors (1713649229922).

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

1220211022110 is a wasteful number, since it uses less digits than its factorization.

1220211022110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74358328.

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

Adding to 1220211022110 its reverse (112201120221), we get a palindrome (1332412142331).

The spelling of 1220211022110 in words is "one trillion, two hundred twenty billion, two hundred eleven million, twenty-two thousand, one hundred ten".