1021222200121 has 8 divisors (see below), whose sum is σ = 1021973696640. Its totient is φ = 1020470830368.

The previous prime is 1021222200109. The next prime is 1021222200191. The reversal of 1021222200121 is 1210022221201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1021222200121 - 2³³ = 1012632265529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021222200095 and 1021222200104.

It is not an unprimeable number, because it can be changed into a prime (1021222200191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21142420 + ... + 21190666.

It is an arithmetic number, because the mean of its divisors is an integer number (127746712080).

Almost surely, 2^{1021222200121} is an apocalyptic number.

It is an amenable number.

1021222200121 is a deficient number, since it is larger than the sum of its proper divisors (751496519).

1021222200121 is a wasteful number, since it uses less digits than its factorization.

1021222200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63383.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021222200121 its reverse (1210022221201), we get a palindrome (2231244421322).

The spelling of 1021222200121 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two hundred thousand, one hundred twenty-one".