102421052212 has 24 divisors (see below), whose sum is σ = 179701587072. Its totient is φ = 51077808000.

The previous prime is 102421052191. The next prime is 102421052219. The reversal of 102421052212 is 212250124201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421052219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9737068 + ... + 9747580.

It is an arithmetic number, because the mean of its divisors is an integer number (7487566128).

Almost surely, 2^102421052212 is an apocalyptic number.

It is an amenable number.

102421052212 is a deficient number, since it is larger than the sum of its proper divisors (77280534860).

102421052212 is a wasteful number, since it uses less digits than its factorization.

102421052212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16599 (or 16597 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 102421052212 its reverse (212250124201), we get a palindrome (314671176413).

The spelling of 102421052212 in words is "one hundred two billion, four hundred twenty-one million, fifty-two thousand, two hundred twelve".