120202101120221 has 4 divisors (see below), whose sum is σ = 120202123069500. Its totient is φ = 120202079170944.

The previous prime is 120202101120203. The next prime is 120202101120223. The reversal of 120202101120221 is 122021101202021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 100648768852996 + 19553332267225 = 10032386^2 + 4421915^2 .

It is a cyclic number.

It is not a de Polignac number, because 120202101120221 - 2²² = 120202096925917 is a prime.

It is a super-2 number, since 2×120202101120221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120202101120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120202101120223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4751555 + ... + 16216703.

It is an arithmetic number, because the mean of its divisors is an integer number (30050530767375).

Almost surely, 2^{120202101120221} is an apocalyptic number.

It is an amenable number.

120202101120221 is a deficient number, since it is larger than the sum of its proper divisors (21949279).

120202101120221 is a wasteful number, since it uses less digits than its factorization.

120202101120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21949278.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120202101120221 its reverse (122021101202021), we get a palindrome (242223202322242).

The spelling of 120202101120221 in words is "one hundred twenty trillion, two hundred two billion, one hundred one million, one hundred twenty thousand, two hundred twenty-one".