2002101201221 has 16 divisors (see below), whose sum is σ = 2191839533568. Its totient is φ = 1813661102400.

The previous prime is 2002101201209. The next prime is 2002101201251. The reversal of 2002101201221 is 1221021012002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002101201221 is a prime.

It is a super-2 number, since 2×2002101201221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002101201196 and 2002101201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002101201251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3746075 + ... + 4247031.

It is an arithmetic number, because the mean of its divisors is an integer number (136989970848).

Almost surely, 2^{2002101201221} is an apocalyptic number.

It is an amenable number.

2002101201221 is a deficient number, since it is larger than the sum of its proper divisors (189738332347).

2002101201221 is a wasteful number, since it uses less digits than its factorization.

2002101201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502252.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2002101201221 its reverse (1221021012002), we get a palindrome (3223122213223).

The spelling of 2002101201221 in words is "two trillion, two billion, one hundred one million, two hundred one thousand, two hundred twenty-one".