220121110102 has 4 divisors (see below), whose sum is σ = 330181665156. Its totient is φ = 110060555050.

The previous prime is 220121110093. The next prime is 220121110109. The reversal of 220121110102 is 201011121022.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×220121110102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121110109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55030277524 + ... + 55030277527.

It is an arithmetic number, because the mean of its divisors is an integer number (82545416289).

Almost surely, 2^220121110102 is an apocalyptic number.

220121110102 is a deficient number, since it is larger than the sum of its proper divisors (110060555054).

220121110102 is a wasteful number, since it uses less digits than its factorization.

220121110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110060555053.

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

Adding to 220121110102 its reverse (201011121022), we get a palindrome (421132231124).

The spelling of 220121110102 in words is "two hundred twenty billion, one hundred twenty-one million, one hundred ten thousand, one hundred two".