121253220421401 has 8 divisors (see below), whose sum is σ = 161923177351584. Its totient is φ = 80709371886080.

The previous prime is 121253220421373. The next prime is 121253220421439. The reversal of 121253220421401 is 104124022352121.

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 121253220421401 - 2⁵ = 121253220421369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121253220431401) 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, 31527096471 + ... + 31527100316.

It is an arithmetic number, because the mean of its divisors is an integer number (20240397168948).

Almost surely, 2^{121253220421401} is an apocalyptic number.

It is an amenable number.

121253220421401 is a deficient number, since it is larger than the sum of its proper divisors (40669956930183).

121253220421401 is an equidigital number, since it uses as much as digits as its factorization.

121253220421401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63054197431.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 121253220421401 its reverse (104124022352121), we get a palindrome (225377242773522).

The spelling of 121253220421401 in words is "one hundred twenty-one trillion, two hundred fifty-three billion, two hundred twenty million, four hundred twenty-one thousand, four hundred one".