2140021401221 has 8 divisors (see below), whose sum is σ = 2337710894784. Its totient is φ = 1942855589920.

The previous prime is 2140021401163. The next prime is 2140021401223. The reversal of 2140021401221 is 1221041200412.

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-2140021401221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140021401193 and 2140021401202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140021401223) 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, 130912016 + ... + 130928361.

It is an arithmetic number, because the mean of its divisors is an integer number (292213861848).

Almost surely, 2^{2140021401221} is an apocalyptic number.

It is an amenable number.

2140021401221 is a deficient number, since it is larger than the sum of its proper divisors (197689493563).

2140021401221 is a wasteful number, since it uses less digits than its factorization.

2140021401221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261841131.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2140021401221 its reverse (1221041200412), we get a palindrome (3361062601633).

The spelling of 2140021401221 in words is "two trillion, one hundred forty billion, twenty-one million, four hundred one thousand, two hundred twenty-one".