222212111001001 has 24 divisors (see below), whose sum is σ = 247691511260424. Its totient is φ = 199180977600000.

The previous prime is 222212111000987. The next prime is 222212111001007. The reversal of 222212111001001 is 100100111212222.

222212111001001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 54475913408400 + 167736197592601 = 7380780^2 + 12951301^2 .

It is not a de Polignac number, because 222212111001001 - 2²³ = 222212102612393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222212111001007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34778410 + ... + 40668931.

It is an arithmetic number, because the mean of its divisors is an integer number (10320479635851).

Almost surely, 2^{222212111001001} is an apocalyptic number.

It is an amenable number.

222212111001001 is a deficient number, since it is larger than the sum of its proper divisors (25479400259423).

222212111001001 is a wasteful number, since it uses less digits than its factorization.

222212111001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75447705 (or 75447694 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222212111001001 its reverse (100100111212222), we get a palindrome (322312222213223).

The spelling of 222212111001001 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred eleven million, one thousand, one".