121452021055 has 8 divisors (see below), whose sum is σ = 146257417872. Its totient is φ = 96818288448.

The previous prime is 121452021013. The next prime is 121452021059. The reversal of 121452021055 is 550120254121.

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 121452021055 - 2¹³ = 121452012863 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 (121452021059) 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, 42914494 + ... + 42917323.

It is an arithmetic number, because the mean of its divisors is an integer number (18282177234).

Almost surely, 2^121452021055 is an apocalyptic number.

121452021055 is a deficient number, since it is larger than the sum of its proper divisors (24805396817).

121452021055 is an equidigital number, since it uses as much as digits as its factorization.

121452021055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85832105.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 121452021055 its reverse (550120254121), we get a palindrome (671572275176).

The spelling of 121452021055 in words is "one hundred twenty-one billion, four hundred fifty-two million, twenty-one thousand, fifty-five".