90221020122121 has 8 divisors (see below), whose sum is σ = 109175015946240. Its totient is φ = 72783343963968.

The previous prime is 90221020122083. The next prime is 90221020122151. The reversal of 90221020122121 is 12122102012209.

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 90221020122121 - 2¹¹ = 90221020120073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90221020122151) 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, 379079916361 + ... + 379079916598.

It is an arithmetic number, because the mean of its divisors is an integer number (13646876993280).

Almost surely, 2^{90221020122121} is an apocalyptic number.

It is an amenable number.

90221020122121 is a deficient number, since it is larger than the sum of its proper divisors (18953995824119).

90221020122121 is a wasteful number, since it uses less digits than its factorization.

90221020122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758159832983.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 90221020122121 in words is "ninety trillion, two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, one hundred twenty-one".