121021222101 has 8 divisors (see below), whose sum is σ = 173774062560. Its totient is φ = 74474598192.

The previous prime is 121021222051. The next prime is 121021222109. The reversal of 121021222101 is 101222120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121021222101 - 2¹¹ = 121021220053 is a prime.

It is a super-2 number, since 2×121021222101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021222109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551554091 + ... + 1551554168.

It is an arithmetic number, because the mean of its divisors is an integer number (21721757820).

Almost surely, 2^121021222101 is an apocalyptic number.

It is an amenable number.

121021222101 is a deficient number, since it is larger than the sum of its proper divisors (52752840459).

121021222101 is a wasteful number, since it uses less digits than its factorization.

121021222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103108275.

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

Adding to 121021222101 its reverse (101222120121), we get a palindrome (222243342222).

The spelling of 121021222101 in words is "one hundred twenty-one billion, twenty-one million, two hundred twenty-two thousand, one hundred one".