1421721222371 has 8 divisors (see below), whose sum is σ = 1425176929680. Its totient is φ = 1418265813888.

The previous prime is 1421721222353. The next prime is 1421721222391. The reversal of 1421721222371 is 1732221271241.

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

It is a cyclic number.

It is not a de Polignac number, because 1421721222371 - 2³⁸ = 1146843315427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421721222391) 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, 11695415 + ... + 11816351.

It is an arithmetic number, because the mean of its divisors is an integer number (178147116210).

Almost surely, 2^{1421721222371} is an apocalyptic number.

1421721222371 is a deficient number, since it is larger than the sum of its proper divisors (3455707309).

1421721222371 is a wasteful number, since it uses less digits than its factorization.

1421721222371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149413.

The product of its digits is 18816, while the sum is 35.

The spelling of 1421721222371 in words is "one trillion, four hundred twenty-one billion, seven hundred twenty-one million, two hundred twenty-two thousand, three hundred seventy-one".