102220121222 has 4 divisors (see below), whose sum is σ = 153330181836. Its totient is φ = 51110060610.

The previous prime is 102220121221. The next prime is 102220121233. The reversal of 102220121222 is 222121022201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222121022201 = 13 ⋅17086232477.

It is a self number, because there is not a number n which added to its sum of digits gives 102220121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220121221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555030304 + ... + 25555030307.

It is an arithmetic number, because the mean of its divisors is an integer number (38332545459).

Almost surely, 2^102220121222 is an apocalyptic number.

102220121222 is a deficient number, since it is larger than the sum of its proper divisors (51110060614).

102220121222 is an equidigital number, since it uses as much as digits as its factorization.

102220121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51110060613.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102220121222 its reverse (222121022201), we get a palindrome (324341143423).

The spelling of 102220121222 in words is "one hundred two billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".