102121220111222 has 32 divisors (see below), whose sum is σ = 172366652989440. Its totient is φ = 45023583924000.

The previous prime is 102121220111221. The next prime is 102121220111293. The reversal of 102121220111222 is 222111022121201.

It is a junction number, because it is equal to n+sod(n) for n = 102121220111194 and 102121220111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121220111221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113246822 + ... + 114145017.

It is an arithmetic number, because the mean of its divisors is an integer number (5386457905920).

Almost surely, 2^{102121220111222} is an apocalyptic number.

102121220111222 is a deficient number, since it is larger than the sum of its proper divisors (70245432878218).

102121220111222 is a wasteful number, since it uses less digits than its factorization.

102121220111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227392628.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102121220111222 its reverse (222111022121201), we get a palindrome (324232242232423).

The spelling of 102121220111222 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, two hundred twenty-two".