101121022122221 has 4 divisors (see below), whose sum is σ = 105517588301472. Its totient is φ = 96724455942972.

The previous prime is 101121022122217. The next prime is 101121022122247. The reversal of 101121022122221 is 122221220121101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101121022122221 - 2² = 101121022122217 is a prime.

It is a super-2 number, since 2×101121022122221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121022122193 and 101121022122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121022122721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198283089591 + ... + 2198283089636.

It is an arithmetic number, because the mean of its divisors is an integer number (26379397075368).

Almost surely, 2^{101121022122221} is an apocalyptic number.

It is an amenable number.

101121022122221 is a deficient number, since it is larger than the sum of its proper divisors (4396566179251).

101121022122221 is an equidigital number, since it uses as much as digits as its factorization.

101121022122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396566179250.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 101121022122221 its reverse (122221220121101), we get a palindrome (223342242243322).

The spelling of 101121022122221 in words is "one hundred one trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".