202212209978 has 8 divisors (see below), whose sum is σ = 303361549920. Its totient is φ = 101091693340.

The previous prime is 202212209959. The next prime is 202212209993. The reversal of 202212209978 is 879902212202.

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

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, 7188278 + ... + 7216353.

It is an arithmetic number, because the mean of its divisors is an integer number (37920193740).

Almost surely, 2^202212209978 is an apocalyptic number.

202212209978 is a deficient number, since it is larger than the sum of its proper divisors (101149339942).

202212209978 is a wasteful number, since it uses less digits than its factorization.

202212209978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14411652.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 202212209978 in words is "two hundred two billion, two hundred twelve million, two hundred nine thousand, nine hundred seventy-eight".