1022001000121 has 4 divisors (see below), whose sum is σ = 1031923340032. Its totient is φ = 1012078660212.

The previous prime is 1022001000103. The next prime is 1022001000127. The reversal of 1022001000121 is 1210001002201.

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 1022001000121 - 2⁵ = 1022001000089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022001000098 and 1022001000107.

It is not an unprimeable number, because it can be changed into a prime (1022001000127) 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, 4961169801 + ... + 4961170006.

It is an arithmetic number, because the mean of its divisors is an integer number (257980835008).

Almost surely, 2^{1022001000121} is an apocalyptic number.

It is an amenable number.

1022001000121 is a deficient number, since it is larger than the sum of its proper divisors (9922339911).

1022001000121 is an equidigital number, since it uses as much as digits as its factorization.

1022001000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922339910.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1022001000121 its reverse (1210001002201), we get a palindrome (2232002002322).

The spelling of 1022001000121 in words is "one trillion, twenty-two billion, one million, one hundred twenty-one", and thus it is an aban number.