1131000222121 has 32 divisors (see below), whose sum is σ = 1443414398976. Its totient is φ = 860479200000.

The previous prime is 1131000222119. The next prime is 1131000222133. The reversal of 1131000222121 is 1212220001311.

It is not a de Polignac number, because 1131000222121 - 2¹ = 1131000222119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131000222095 and 1131000222104.

It is not an unprimeable number, because it can be changed into a prime (1131000222151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8913121 + ... + 9039121.

It is an arithmetic number, because the mean of its divisors is an integer number (45106699968).

Almost surely, 2^{1131000222121} is an apocalyptic number.

1131000222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1131000222121 is a deficient number, since it is larger than the sum of its proper divisors (312414176855).

1131000222121 is a wasteful number, since it uses less digits than its factorization.

1131000222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128773.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1131000222121 its reverse (1212220001311), we get a palindrome (2343220223432).

The spelling of 1131000222121 in words is "one trillion, one hundred thirty-one billion, two hundred twenty-two thousand, one hundred twenty-one".