1201221103031 has 4 divisors (see below), whose sum is σ = 1201836800064. Its totient is φ = 1200605406000.

The previous prime is 1201221102973. The next prime is 1201221103039. The reversal of 1201221103031 is 1303011221021.

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 1201221103031 - 2¹⁴ = 1201221086647 is a prime.

It is a super-2 number, since 2×1201221103031² (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 (1201221103039) 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, 307845590 + ... + 307849491.

It is an arithmetic number, because the mean of its divisors is an integer number (300459200016).

Almost surely, 2^{1201221103031} is an apocalyptic number.

1201221103031 is a deficient number, since it is larger than the sum of its proper divisors (615697033).

1201221103031 is an equidigital number, since it uses as much as digits as its factorization.

1201221103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615697032.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1201221103031 its reverse (1303011221021), we get a palindrome (2504232324052).

The spelling of 1201221103031 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred three thousand, thirty-one".