121022021022221 has 8 divisors (see below), whose sum is σ = 135592239769824. Its totient is φ = 107046505080720.

The previous prime is 121022021022211. The next prime is 121022021022229. The reversal of 121022021022221 is 122220120220121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121022021022221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121022021022193 and 121022021022202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022021022229) 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, 148675701095 + ... + 148675701908.

It is an arithmetic number, because the mean of its divisors is an integer number (16949029971228).

Almost surely, 2^{121022021022221} is an apocalyptic number.

121022021022221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121022021022221 is a deficient number, since it is larger than the sum of its proper divisors (14570218747603).

121022021022221 is a wasteful number, since it uses less digits than its factorization.

121022021022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297351403051.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121022021022221 its reverse (122220120220121), we get a palindrome (243242141242342).

The spelling of 121022021022221 in words is "one hundred twenty-one trillion, twenty-two billion, twenty-one million, twenty-two thousand, two hundred twenty-one".