121010220200101 has 4 divisors (see below), whose sum is σ = 122993994301804. Its totient is φ = 119026446098400.

The previous prime is 121010220200057. The next prime is 121010220200161. The reversal of 121010220200101 is 101002022010121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4334599080900 + 116675621119201 = 2081970^2 + 10801649^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010220200101 - 2⁴¹ = 118811196944549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010220200161) 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, 991887050760 + ... + 991887050881.

It is an arithmetic number, because the mean of its divisors is an integer number (30748498575451).

Almost surely, 2^{121010220200101} is an apocalyptic number.

It is an amenable number.

121010220200101 is a deficient number, since it is larger than the sum of its proper divisors (1983774101703).

121010220200101 is an equidigital number, since it uses as much as digits as its factorization.

121010220200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983774101702.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121010220200101 its reverse (101002022010121), we get a palindrome (222012242210222).

The spelling of 121010220200101 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty million, two hundred thousand, one hundred one".