1231001202222 has 48 divisors (see below), whose sum is σ = 3009971605680. Its totient is φ = 360167539200.

The previous prime is 1231001202217. The next prime is 1231001202281. The reversal of 1231001202222 is 2222021001321.

1231001202222 is a `hidden beast` number, since 12 + 310 + 0 + 120 + 2 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1231001202195 and 1231001202204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107186979 + ... + 107198462.

It is an arithmetic number, because the mean of its divisors is an integer number (62707741785).

Almost surely, 2^{1231001202222} is an apocalyptic number.

1231001202222 is an abundant number, since it is smaller than the sum of its proper divisors (1778970403458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231001202222 is a wasteful number, since it uses less digits than its factorization.

1231001202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214385489 (or 214385486 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1231001202222 its reverse (2222021001321), we get a palindrome (3453022203543).

The spelling of 1231001202222 in words is "one trillion, two hundred thirty-one billion, one million, two hundred two thousand, two hundred twenty-two".