102120020212212 has 72 divisors (see below), whose sum is σ = 265130639742696. Its totient is φ = 33117851061504.

The previous prime is 102120020212201. The next prime is 102120020212247. The reversal of 102120020212212 is 212212020021201.

It is a happy number.

102120020212212 is a `hidden beast` number, since 1 + 0 + 21 + 200 + 20 + 212 + 212 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 80976889648656 + 21143130563556 = 8998716^2 + 4598166^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18043038 + ... + 23017194.

Almost surely, 2^{102120020212212} is an apocalyptic number.

102120020212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102120020212212 is an abundant number, since it is smaller than the sum of its proper divisors (163010619530484).

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

102120020212212 is a wasteful number, since it uses less digits than its factorization.

102120020212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989617 (or 4989612 counting only the distinct ones).

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

Adding to 102120020212212 its reverse (212212020021201), we get a palindrome (314332040233413).

The spelling of 102120020212212 in words is "one hundred two trillion, one hundred twenty billion, twenty million, two hundred twelve thousand, two hundred twelve".