121001012020202 has 4 divisors (see below), whose sum is σ = 181501518030306. Its totient is φ = 60500506010100.

The previous prime is 121001012020201. The next prime is 121001012020223. The reversal of 121001012020202 is 202020210100121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115609611300481 + 5391400719721 = 10752191^2 + 2321939^2 .

It is a super-2 number, since 2×121001012020202² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121001012020201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30250253005049 + ... + 30250253005052.

Almost surely, 2^{121001012020202} is an apocalyptic number.

121001012020202 is a deficient number, since it is larger than the sum of its proper divisors (60500506010104).

121001012020202 is an equidigital number, since it uses as much as digits as its factorization.

121001012020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500506010103.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121001012020202 its reverse (202020210100121), we get a palindrome (323021222120323).

The spelling of 121001012020202 in words is "one hundred twenty-one trillion, one billion, twelve million, twenty thousand, two hundred two".