102012021202122 has 40 divisors (see below), whose sum is σ = 229589463365856. Its totient is φ = 33854209667208.

The previous prime is 102012021202081. The next prime is 102012021202123. The reversal of 102012021202122 is 221202120210201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102012021202095 and 102012021202104.

It is not an unprimeable number, because it can be changed into a prime (102012021202123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1386976078 + ... + 1387049625.

Almost surely, 2^{102012021202122} is an apocalyptic number.

102012021202122 is an abundant number, since it is smaller than the sum of its proper divisors (127577442163734).

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

102012021202122 is a wasteful number, since it uses less digits than its factorization.

102012021202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774025944 (or 2774025935 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102012021202122 its reverse (221202120210201), we get a palindrome (323214141412323).

The spelling of 102012021202122 in words is "one hundred two trillion, twelve billion, twenty-one million, two hundred two thousand, one hundred twenty-two".