1201022120221 has 64 divisors (see below), whose sum is σ = 1606263934464. Its totient is φ = 869308416000.

The previous prime is 1201022120167. The next prime is 1201022120227. The reversal of 1201022120221 is 1220212201021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201022120221 - 2⁷ = 1201022120093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201022120195 and 1201022120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201022120227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41895925 + ... + 41924581.

It is an arithmetic number, because the mean of its divisors is an integer number (25097873976).

Almost surely, 2^{1201022120221} is an apocalyptic number.

1201022120221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201022120221 is a deficient number, since it is larger than the sum of its proper divisors (405241814243).

1201022120221 is a wasteful number, since it uses less digits than its factorization.

1201022120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29110.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1201022120221 its reverse (1220212201021), we get a palindrome (2421234321242).

The spelling of 1201022120221 in words is "one trillion, two hundred one billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".