1201222221031 has 4 divisors (see below), whose sum is σ = 1372825395472. Its totient is φ = 1029619046592.

The previous prime is 1201222221019. The next prime is 1201222221053. The reversal of 1201222221031 is 1301222221021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201222221031 - 2²⁵ = 1201188666599 is a prime.

It is a super-2 number, since 2×1201222221031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201222221631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85801587210 + ... + 85801587223.

It is an arithmetic number, because the mean of its divisors is an integer number (343206348868).

Almost surely, 2^{1201222221031} is an apocalyptic number.

1201222221031 is a deficient number, since it is larger than the sum of its proper divisors (171603174441).

1201222221031 is an equidigital number, since it uses as much as digits as its factorization.

1201222221031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171603174440.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1201222221031 its reverse (1301222221021), we get a palindrome (2502444442052).

The spelling of 1201222221031 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, thirty-one".