1202121101221 has 8 divisors (see below), whose sum is σ = 1234599962400. Its totient is φ = 1170045704400.

The previous prime is 1202121101173. The next prime is 1202121101227. The reversal of 1202121101221 is 1221011212021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202121101221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202121101195 and 1202121101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202121101227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100860051 + ... + 100871968.

It is an arithmetic number, because the mean of its divisors is an integer number (154324995300).

Almost surely, 2^{1202121101221} is an apocalyptic number.

It is an amenable number.

1202121101221 is a deficient number, since it is larger than the sum of its proper divisors (32478861179).

1202121101221 is a wasteful number, since it uses less digits than its factorization.

1202121101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201732179.

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

Adding to 1202121101221 its reverse (1221011212021), we get a palindrome (2423132313242).

The spelling of 1202121101221 in words is "one trillion, two hundred two billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-one".