121010002002 has 20 divisors (see below), whose sum is σ = 271152041886. Its totient is φ = 40336667280.

The previous prime is 121010001989. The next prime is 121010002013. The reversal of 121010002002 is 200200010121.

It can be written as a sum of positive squares in only one way, i.e., 70542828801 + 50467173201 = 265599^2 + 224649^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 373487499 + ... + 373487822.

Almost surely, 2^121010002002 is an apocalyptic number.

121010002002 is an abundant number, since it is smaller than the sum of its proper divisors (150142039884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121010002002 is an equidigital number, since it uses as much as digits as its factorization.

121010002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746975335 (or 746975326 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 121010002002 its reverse (200200010121), we get a palindrome (321210012123).

The spelling of 121010002002 in words is "one hundred twenty-one billion, ten million, two thousand, two".