220121212001001 has 32 divisors (see below), whose sum is σ = 302463538594560. Its totient is φ = 142290475225344.

The previous prime is 220121212000997. The next prime is 220121212001017. The reversal of 220121212001001 is 100100212121022.

220121212001001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220121212001001 - 2² = 220121212000997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220121212001021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2147409916 + ... + 2147512418.

It is an arithmetic number, because the mean of its divisors is an integer number (9451985581080).

Almost surely, 2^{220121212001001} is an apocalyptic number.

It is an amenable number.

220121212001001 is a deficient number, since it is larger than the sum of its proper divisors (82342326593559).

220121212001001 is a wasteful number, since it uses less digits than its factorization.

220121212001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168865.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220121212001001 its reverse (100100212121022), we get a palindrome (320221424122023).

The spelling of 220121212001001 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twelve million, one thousand, one".