1002121220101 has 8 divisors (see below), whose sum is σ = 1034470129664. Its totient is φ = 969773711760.

The previous prime is 1002121220059. The next prime is 1002121220119. The reversal of 1002121220101 is 1010221212001.

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

It is not a de Polignac number, because 1002121220101 - 2¹⁷ = 1002121089029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002121220141) 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, 1214095 + ... + 1865011.

It is an arithmetic number, because the mean of its divisors is an integer number (129308766208).

Almost surely, 2^{1002121220101} is an apocalyptic number.

It is an amenable number.

1002121220101 is a deficient number, since it is larger than the sum of its proper divisors (32348909563).

1002121220101 is an equidigital number, since it uses as much as digits as its factorization.

1002121220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700611.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1002121220101 its reverse (1010221212001), we get a palindrome (2012342432102).

The spelling of 1002121220101 in words is "one trillion, two billion, one hundred twenty-one million, two hundred twenty thousand, one hundred one".