1011222202121 has 8 divisors (see below), whose sum is σ = 1015818019200. Its totient is φ = 1006629425200.

The previous prime is 1011222202073. The next prime is 1011222202127. The reversal of 1011222202121 is 1212022221101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011222202121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011222202121.

It is not an unprimeable number, because it can be changed into a prime (1011222202127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91955 + ... + 1425096.

It is an arithmetic number, because the mean of its divisors is an integer number (126977252400).

Almost surely, 2^{1011222202121} is an apocalyptic number.

It is an amenable number.

1011222202121 is a deficient number, since it is larger than the sum of its proper divisors (4595817079).

1011222202121 is a wasteful number, since it uses less digits than its factorization.

1011222202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520079.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1011222202121 its reverse (1212022221101), we get a palindrome (2223244423222).

The spelling of 1011222202121 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred two thousand, one hundred twenty-one".