221121100121003 has 8 divisors (see below), whose sum is σ = 221538422531520. Its totient is φ = 220704082663680.

The previous prime is 221121100120979. The next prime is 221121100121023. The reversal of 221121100121003 is 300121001121122.

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 221121100121003 - 2⁴² = 216723053609899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221121100121023) 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, 74786708 + ... + 77687153.

It is an arithmetic number, because the mean of its divisors is an integer number (27692302816440).

Almost surely, 2^{221121100121003} is an apocalyptic number.

221121100121003 is a deficient number, since it is larger than the sum of its proper divisors (417322410517).

221121100121003 is a wasteful number, since it uses less digits than its factorization.

221121100121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152476597.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 221121100121003 its reverse (300121001121122), we get a palindrome (521242101242125).

The spelling of 221121100121003 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, three".