120021210101221 has 32 divisors (see below), whose sum is σ = 141433829147520. Its totient is φ = 100410502348800.

The previous prime is 120021210101213. The next prime is 120021210101231. The reversal of 120021210101221 is 122101012120021.

It is a cyclic number.

It is not a de Polignac number, because 120021210101221 - 2³ = 120021210101213 is a prime.

It is a super-2 number, since 2×120021210101221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120021210101195 and 120021210101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021210101201) 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, 60716410 + ... + 62661988.

It is an arithmetic number, because the mean of its divisors is an integer number (4419807160860).

Almost surely, 2^{120021210101221} is an apocalyptic number.

120021210101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120021210101221 is a deficient number, since it is larger than the sum of its proper divisors (21412619046299).

120021210101221 is a wasteful number, since it uses less digits than its factorization.

120021210101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946917.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120021210101221 its reverse (122101012120021), we get a palindrome (242122222221242).

The spelling of 120021210101221 in words is "one hundred twenty trillion, twenty-one billion, two hundred ten million, one hundred one thousand, two hundred twenty-one".