1002120022221 has 8 divisors (see below), whose sum is σ = 1336165170624. Its totient is φ = 668077444320.

The previous prime is 1002120022103. The next prime is 1002120022229. The reversal of 1002120022221 is 1222200212001.

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

It is not a de Polignac number, because 1002120022221 - 2⁷ = 1002120022093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002120022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002120022229) 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, 623281 + ... + 1546841.

It is an arithmetic number, because the mean of its divisors is an integer number (167020646328).

Almost surely, 2^{1002120022221} is an apocalyptic number.

It is an amenable number.

1002120022221 is a deficient number, since it is larger than the sum of its proper divisors (334045148403).

1002120022221 is an equidigital number, since it uses as much as digits as its factorization.

1002120022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285251.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1002120022221 its reverse (1222200212001), we get a palindrome (2224320234222).

The spelling of 1002120022221 in words is "one trillion, two billion, one hundred twenty million, twenty-two thousand, two hundred twenty-one".