1002201220021 has 8 divisors (see below), whose sum is σ = 1003071168000. Its totient is φ = 1001331643200.

The previous prime is 1002201219967. The next prime is 1002201220039. The reversal of 1002201220021 is 1200221022001.

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 a de Polignac number, because none of the positive numbers 2^k-1002201220021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002201219983 and 1002201220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002201220051) 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, 5452780 + ... + 5633578.

It is an arithmetic number, because the mean of its divisors is an integer number (125383896000).

Almost surely, 2^{1002201220021} is an apocalyptic number.

It is an amenable number.

1002201220021 is a deficient number, since it is larger than the sum of its proper divisors (869947979).

1002201220021 is a wasteful number, since it uses less digits than its factorization.

1002201220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185579.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1002201220021 its reverse (1200221022001), we get a palindrome (2202422242022).

The spelling of 1002201220021 in words is "one trillion, two billion, two hundred one million, two hundred twenty thousand, twenty-one".