1000202221121 has 8 divisors (see below), whose sum is σ = 1017200332800. Its totient is φ = 983205627280.

The previous prime is 1000202221091. The next prime is 1000202221133. The reversal of 1000202221121 is 1211222020001.

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 1000202221121 - 2¹⁰ = 1000202220097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1000202221096 and 1000202221105.

It is not an unprimeable number, because it can be changed into a prime (1000202223121) 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, 991391 + ... + 1727211.

It is an arithmetic number, because the mean of its divisors is an integer number (127150041600).

Almost surely, 2^{1000202221121} is an apocalyptic number.

It is an amenable number.

1000202221121 is a deficient number, since it is larger than the sum of its proper divisors (16998111679).

1000202221121 is an equidigital number, since it uses as much as digits as its factorization.

1000202221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758919.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1000202221121 its reverse (1211222020001), we get a palindrome (2211424241122).

The spelling of 1000202221121 in words is "one trillion, two hundred two million, two hundred twenty-one thousand, one hundred twenty-one".