70022421 has 32 divisors (see below), whose sum is σ = 120992000. Its totient is φ = 40007520.

The previous prime is 70022417. The next prime is 70022423. The reversal of 70022421 is 12422007.

It is not a de Polignac number, because 70022421 - 2² = 70022417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70022394 and 70022403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70022423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5481 + ... + 13041.

It is an arithmetic number, because the mean of its divisors is an integer number (3781000).

Almost surely, 2^70022421 is an apocalyptic number.

It is an amenable number.

70022421 is a deficient number, since it is larger than the sum of its proper divisors (50969579).

70022421 is an equidigital number, since it uses as much as digits as its factorization.

70022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7591 (or 7571 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 70022421 is about 8367.9400690971. The cubic root of 70022421 is about 412.1725268732.

Adding to 70022421 its reverse (12422007), we get a palindrome (82444428).

The spelling of 70022421 in words is "seventy million, twenty-two thousand, four hundred twenty-one".