121021000202 has 8 divisors (see below), whose sum is σ = 187791207300. Its totient is φ = 58423931104.

The previous prime is 121021000189. The next prime is 121021000207. The reversal of 121021000202 is 202000120121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 109733850121 + 11287150081 = 331261^2 + 106241^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121021000207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043284427 + ... + 1043284542.

Almost surely, 2^121021000202 is an apocalyptic number.

121021000202 is a deficient number, since it is larger than the sum of its proper divisors (66770207098).

121021000202 is a wasteful number, since it uses less digits than its factorization.

121021000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086569000.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121021000202 its reverse (202000120121), we get a palindrome (323021120323).

The spelling of 121021000202 in words is "one hundred twenty-one billion, twenty-one million, two hundred two", and thus it is an aban number.