1200020220231 has 16 divisors (see below), whose sum is σ = 1828713106944. Its totient is φ = 685684265184.

The previous prime is 1200020220199. The next prime is 1200020220293. The reversal of 1200020220231 is 1320220200021.

It is a happy number.

It is not a de Polignac number, because 1200020220231 - 2⁵ = 1200020220199 is a prime.

It is a super-2 number, since 2×1200020220231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1200020220231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200020220331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375971 + ... + 2072036.

It is an arithmetic number, because the mean of its divisors is an integer number (114294569184).

Almost surely, 2^{1200020220231} is an apocalyptic number.

1200020220231 is a deficient number, since it is larger than the sum of its proper divisors (628692886713).

1200020220231 is a wasteful number, since it uses less digits than its factorization.

1200020220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464590.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1200020220231 its reverse (1320220200021), we get a palindrome (2520240420252).

The spelling of 1200020220231 in words is "one trillion, two hundred billion, twenty million, two hundred twenty thousand, two hundred thirty-one".