222177780001 has 2 divisors, whose sum is σ = 222177780002. Its totient is φ = 222177780000.

The previous prime is 222177779977. The next prime is 222177780037. The reversal of 222177780001 is 100087771222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178003829025 + 44173950976 = 421905^2 + 210176^2 .

It is a cyclic number.

It is not a de Polignac number, because 222177780001 - 2¹¹ = 222177777953 is a prime.

It is a super-4 number, since 4×222177780001⁴ (a number of 46 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (222177780091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111088890000 + 111088890001.

It is an arithmetic number, because the mean of its divisors is an integer number (111088890001).

Almost surely, 2^222177780001 is an apocalyptic number.

It is an amenable number.

222177780001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222177780001 is an equidigital number, since it uses as much as digits as its factorization.

222177780001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 37.

The spelling of 222177780001 in words is "two hundred twenty-two billion, one hundred seventy-seven million, seven hundred eighty thousand, one".