3401021421 has 24 divisors (see below), whose sum is σ = 5619616704. Its totient is φ = 1941629760.

The previous prime is 3401021419. The next prime is 3401021423. The reversal of 3401021421 is 1241201043.

It is an interprime number because it is at equal distance from previous prime (3401021419) and next prime (3401021423).

It is not a de Polignac number, because 3401021421 - 2¹ = 3401021419 is a prime.

It is a super-2 number, since 2×3401021421² = 23133893412201718482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3401021394 and 3401021403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3401021423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44506 + ... + 93716.

It is an arithmetic number, because the mean of its divisors is an integer number (234150696).

Almost surely, 2^3401021421 is an apocalyptic number.

It is an amenable number.

3401021421 is a deficient number, since it is larger than the sum of its proper divisors (2218595283).

3401021421 is a wasteful number, since it uses less digits than its factorization.

3401021421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50321 (or 50318 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3401021421 is about 58318.2769035574. The cubic root of 3401021421 is about 1503.8451600735.

Adding to 3401021421 its reverse (1241201043), we get a palindrome (4642222464).

The spelling of 3401021421 in words is "three billion, four hundred one million, twenty-one thousand, four hundred twenty-one".