1211022220110 has 16 divisors (see below), whose sum is σ = 2906453328336. Its totient is φ = 322939258688.

The previous prime is 1211022220087. The next prime is 1211022220127. The reversal of 1211022220110 is 110222201121.

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 1211022220110.

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, 20183703639 + ... + 20183703698.

It is an arithmetic number, because the mean of its divisors is an integer number (181653333021).

Almost surely, 2^{1211022220110} is an apocalyptic number.

1211022220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211022220110 is an abundant number, since it is smaller than the sum of its proper divisors (1695431108226).

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

1211022220110 is a wasteful number, since it uses less digits than its factorization.

1211022220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40367407347.

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

Adding to 1211022220110 its reverse (110222201121), we get a palindrome (1321244421231).

The spelling of 1211022220110 in words is "one trillion, two hundred eleven billion, twenty-two million, two hundred twenty thousand, one hundred ten".