121020020112202 has 4 divisors (see below), whose sum is σ = 181530030168306. Its totient is φ = 60510010056100.

The previous prime is 121020020112191. The next prime is 121020020112203. The reversal of 121020020112202 is 202211020020121.

It is a happy number.

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., 60616953204721 + 60403066907481 = 7785689^2 + 7771941^2 .

It is not an unprimeable number, because it can be changed into a prime (121020020112203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30255005028049 + ... + 30255005028052.

Almost surely, 2^{121020020112202} is an apocalyptic number.

121020020112202 is a deficient number, since it is larger than the sum of its proper divisors (60510010056104).

121020020112202 is an equidigital number, since it uses as much as digits as its factorization.

121020020112202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60510010056103.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121020020112202 its reverse (202211020020121), we get a palindrome (323231040132323).

The spelling of 121020020112202 in words is "one hundred twenty-one trillion, twenty billion, twenty million, one hundred twelve thousand, two hundred two".