102222121202 has 4 divisors (see below), whose sum is σ = 153333181806. Its totient is φ = 51111060600.

The previous prime is 102222121163. The next prime is 102222121231. The reversal of 102222121202 is 202121222201.

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: 202121222201 = 1129 ⋅179026769.

It can be written as a sum of positive squares in only one way, i.e., 53416916641 + 48805204561 = 231121^2 + 220919^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555530299 + ... + 25555530302.

Almost surely, 2^102222121202 is an apocalyptic number.

102222121202 is a deficient number, since it is larger than the sum of its proper divisors (51111060604).

102222121202 is an equidigital number, since it uses as much as digits as its factorization.

102222121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51111060603.

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

Adding to 102222121202 its reverse (202121222201), we get a palindrome (304343343403).

The spelling of 102222121202 in words is "one hundred two billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred two".