1201122101221 has 32 divisors (see below), whose sum is σ = 1383538399488. Its totient is φ = 1021454254080.

The previous prime is 1201122101197. The next prime is 1201122101227. The reversal of 1201122101221 is 1221012211021.

It is a cyclic number.

It is not a de Polignac number, because 1201122101221 - 2¹¹ = 1201122099173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201122101195 and 1201122101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201122101227) 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, 602669401 + ... + 602671393.

It is an arithmetic number, because the mean of its divisors is an integer number (43235574984).

Almost surely, 2^{1201122101221} is an apocalyptic number.

It is an amenable number.

1201122101221 is a deficient number, since it is larger than the sum of its proper divisors (182416298267).

1201122101221 is a wasteful number, since it uses less digits than its factorization.

1201122101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421.

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

Adding to 1201122101221 its reverse (1221012211021), we get a palindrome (2422134312242).

The spelling of 1201122101221 in words is "one trillion, two hundred one billion, one hundred twenty-two million, one hundred one thousand, two hundred twenty-one".