122120021221111 has 8 divisors (see below), whose sum is σ = 122999447062800. Its totient is φ = 121240607730240.

The previous prime is 122120021221103. The next prime is 122120021221217. The reversal of 122120021221111 is 111122120021221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 122120021221111 - 2³ = 122120021221103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120028221111) 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, 17238771 + ... + 23268331.

It is an arithmetic number, because the mean of its divisors is an integer number (15374930882850).

Almost surely, 2^{122120021221111} is an apocalyptic number.

122120021221111 is a deficient number, since it is larger than the sum of its proper divisors (879425841689).

122120021221111 is a wasteful number, since it uses less digits than its factorization.

122120021221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6175409.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 122120021221111 its reverse (111122120021221), we get a palindrome (233242141242332).

It can be divided in two parts, 122120021221 and 111, that multiplied together give a palindrome (13555322355531).

The spelling of 122120021221111 in words is "one hundred twenty-two trillion, one hundred twenty billion, twenty-one million, two hundred twenty-one thousand, one hundred eleven".