1202101221021 has 32 divisors (see below), whose sum is σ = 1636926614400. Its totient is φ = 784542412800.

The previous prime is 1202101220953. The next prime is 1202101221031. The reversal of 1202101221021 is 1201221012021.

It is not a de Polignac number, because 1202101221021 - 2²² = 1202097026717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202101221031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19031590 + ... + 19094648.

It is an arithmetic number, because the mean of its divisors is an integer number (51153956700).

Almost surely, 2^{1202101221021} is an apocalyptic number.

It is an amenable number.

1202101221021 is a deficient number, since it is larger than the sum of its proper divisors (434825393379).

1202101221021 is a wasteful number, since it uses less digits than its factorization.

1202101221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63869.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1202101221021 its reverse (1201221012021), we get a palindrome (2403322233042).

The spelling of 1202101221021 in words is "one trillion, two hundred two billion, one hundred one million, two hundred twenty-one thousand, twenty-one".