1011222132121 has 4 divisors (see below), whose sum is σ = 1011345897744. Its totient is φ = 1011098366500.

The previous prime is 1011222132091. The next prime is 1011222132143. The reversal of 1011222132121 is 1212312221101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011222132121 - 2⁹ = 1011222131609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011222132191) 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, 61870555 + ... + 61886896.

It is an arithmetic number, because the mean of its divisors is an integer number (252836474436).

Almost surely, 2^{1011222132121} is an apocalyptic number.

It is an amenable number.

1011222132121 is a deficient number, since it is larger than the sum of its proper divisors (123765623).

1011222132121 is an equidigital number, since it uses as much as digits as its factorization.

1011222132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123765622.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1011222132121 its reverse (1212312221101), we get a palindrome (2223534353222).

The spelling of 1011222132121 in words is "one trillion, eleven billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred twenty-one".