101121120020121 has 16 divisors (see below), whose sum is σ = 137372441961600. Its totient is φ = 66141945608960.

The previous prime is 101121120019991. The next prime is 101121120020131. The reversal of 101121120020121 is 121020021121101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101121120020121 - 2¹³ = 101121120011929 is a prime.

It is a super-2 number, since 2×101121120020121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101121120020121.

It is not an unprimeable number, because it can be changed into a prime (101121120020131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99353476 + ... + 100366106.

It is an arithmetic number, because the mean of its divisors is an integer number (8585777622600).

Almost surely, 2^{101121120020121} is an apocalyptic number.

It is an amenable number.

101121120020121 is a deficient number, since it is larger than the sum of its proper divisors (36251321941479).

101121120020121 is a wasteful number, since it uses less digits than its factorization.

101121120020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640736.

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

Adding to 101121120020121 its reverse (121020021121101), we get a palindrome (222141141141222).

The spelling of 101121120020121 in words is "one hundred one trillion, one hundred twenty-one billion, one hundred twenty million, twenty thousand, one hundred twenty-one".