1101221012031 has 16 divisors (see below), whose sum is σ = 1684431496704. Its totient is φ = 626876488224.

The previous prime is 1101221011973. The next prime is 1101221012033. The reversal of 1101221012031 is 1302101221011.

It is not a de Polignac number, because 1101221012031 - 2⁶ = 1101221011967 is a prime.

It is a super-2 number, since 2×1101221012031² (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 1101221012031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101221012033) 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, 99688576 + ... + 99699621.

It is an arithmetic number, because the mean of its divisors is an integer number (105276968544).

Almost surely, 2^{1101221012031} is an apocalyptic number.

1101221012031 is a deficient number, since it is larger than the sum of its proper divisors (583210484673).

1101221012031 is a wasteful number, since it uses less digits than its factorization.

1101221012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199388470.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1101221012031 its reverse (1302101221011), we get a palindrome (2403322233042).

The spelling of 1101221012031 in words is "one trillion, one hundred one billion, two hundred twenty-one million, twelve thousand, thirty-one".