121210200220101 has 24 divisors (see below), whose sum is σ = 171681089171424. Its totient is φ = 76052754643200.

The previous prime is 121210200220097. The next prime is 121210200220229. The reversal of 121210200220101 is 101022002012121.

It is not a de Polignac number, because 121210200220101 - 2² = 121210200220097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210200260101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102499266 + ... + 103675068.

It is an arithmetic number, because the mean of its divisors is an integer number (7153378715476).

Almost surely, 2^{121210200220101} is an apocalyptic number.

It is an amenable number.

121210200220101 is a deficient number, since it is larger than the sum of its proper divisors (50470888951323).

121210200220101 is a wasteful number, since it uses less digits than its factorization.

121210200220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294741 (or 1294724 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121210200220101 its reverse (101022002012121), we get a palindrome (222232202232222).

The spelling of 121210200220101 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred million, two hundred twenty thousand, one hundred one".