121210220101101 has 32 divisors (see below), whose sum is σ = 172666521753600. Its totient is φ = 75407815105920.

The previous prime is 121210220101081. The next prime is 121210220101109. The reversal of 121210220101101 is 101101022012121.

It is a happy number.

It is not a de Polignac number, because 121210220101101 - 2⁷ = 121210220100973 is a prime.

It is a super-2 number, since 2×121210220101101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210220101109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84995020 + ... + 86409338.

It is an arithmetic number, because the mean of its divisors is an integer number (5395828804800).

Almost surely, 2^{121210220101101} is an apocalyptic number.

It is an amenable number.

121210220101101 is a deficient number, since it is larger than the sum of its proper divisors (51456301652499).

121210220101101 is a wasteful number, since it uses less digits than its factorization.

121210220101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436849.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121210220101101 its reverse (101101022012121), we get a palindrome (222311242113222).

The spelling of 121210220101101 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred twenty million, one hundred one thousand, one hundred one".