121020222101 has 32 divisors (see below), whose sum is σ = 129554691840. Its totient is φ = 112792103424.

The previous prime is 121020222097. The next prime is 121020222131. The reversal of 121020222101 is 101222020121.

It is a cyclic number.

It is not a de Polignac number, because 121020222101 - 2² = 121020222097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020222131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159867815 + ... + 159868571.

It is an arithmetic number, because the mean of its divisors is an integer number (4048584120).

Almost surely, 2^121020222101 is an apocalyptic number.

It is an amenable number.

121020222101 is a deficient number, since it is larger than the sum of its proper divisors (8534469739).

121020222101 is a wasteful number, since it uses less digits than its factorization.

121020222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121020222101 its reverse (101222020121), we get a palindrome (222242242222).

The spelling of 121020222101 in words is "one hundred twenty-one billion, twenty million, two hundred twenty-two thousand, one hundred one".