102120212201998 has 8 divisors (see below), whose sum is σ = 153180673381008. Its totient is φ = 51059987741664.

The previous prime is 102120212201963. The next prime is 102120212202013. The reversal of 102120212201998 is 899102212021201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×102120212201998² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102120212201998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58097211 + ... + 59829142.

It is an arithmetic number, because the mean of its divisors is an integer number (19147584172626).

Almost surely, 2^{102120212201998} is an apocalyptic number.

102120212201998 is a deficient number, since it is larger than the sum of its proper divisors (51060461179010).

102120212201998 is a wasteful number, since it uses less digits than its factorization.

102120212201998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118359338.

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 102120212201998 in words is "one hundred two trillion, one hundred twenty billion, two hundred twelve million, two hundred one thousand, nine hundred ninety-eight".