121021012222002 has 20 divisors (see below), whose sum is σ = 271176712571886. Its totient is φ = 40340337407280.

The previous prime is 121021012221983. The next prime is 121021012222037. The reversal of 121021012222002 is 200222210120121.

It is a happy number.

121021012222002 is a `hidden beast` number, since 1 + 210 + 210 + 1 + 22 + 220 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116360037794961 + 4660974427041 = 10787031^2 + 2158929^2 .

It is a super-2 number, since 2×121021012222002² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 373521642499 + ... + 373521642822.

Almost surely, 2^{121021012222002} is an apocalyptic number.

121021012222002 is an abundant number, since it is smaller than the sum of its proper divisors (150155700349884).

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

121021012222002 is an equidigital number, since it uses as much as digits as its factorization.

121021012222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747043285335 (or 747043285326 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121021012222002 its reverse (200222210120121), we get a palindrome (321243222342123).

The spelling of 121021012222002 in words is "one hundred twenty-one trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, two".