421244121223402 has 16 divisors (see below), whose sum is σ = 643790415772512. Its totient is φ = 206647343503120.

The previous prime is 421244121223381. The next prime is 421244121223417. The reversal of 421244121223402 is 204322121442124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24527577 + ... + 38001187.

It is an arithmetic number, because the mean of its divisors is an integer number (40236900985782).

Almost surely, 2^{421244121223402} is an apocalyptic number.

421244121223402 is a deficient number, since it is larger than the sum of its proper divisors (222546294549110).

421244121223402 is a wasteful number, since it uses less digits than its factorization.

421244121223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13768613.

The product of its (nonzero) digits is 49152, while the sum is 34.

Adding to 421244121223402 its reverse (204322121442124), we get a palindrome (625566242665526).

The spelling of 421244121223402 in words is "four hundred twenty-one trillion, two hundred forty-four billion, one hundred twenty-one million, two hundred twenty-three thousand, four hundred two".