22197201952 has 12 divisors (see below), whose sum is σ = 43700741406. Its totient is φ = 11098600960.

The previous prime is 22197201919. The next prime is 22197201967. The reversal of 22197201952 is 25910279122.

It can be written as a sum of positive squares in only one way, i.e., 19264329616 + 2932872336 = 138796^2 + 54156^2 .

It is a super-2 number, since 2×22197201952² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346831249 + ... + 346831312.

Almost surely, 2^22197201952 is an apocalyptic number.

It is an amenable number.

22197201952 is a deficient number, since it is larger than the sum of its proper divisors (21503539454).

22197201952 is an equidigital number, since it uses as much as digits as its factorization.

22197201952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693662571 (or 693662563 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 22197201952 in words is "twenty-two billion, one hundred ninety-seven million, two hundred one thousand, nine hundred fifty-two".