400021155302 has 8 divisors (see below), whose sum is σ = 600040721712. Its totient is φ = 200007581400.

The previous prime is 400021155293. The next prime is 400021155371. The reversal of 400021155302 is 203551120004.

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

It is a super-2 number, since 2×400021155302² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1327349 + ... + 1600592.

It is an arithmetic number, because the mean of its divisors is an integer number (75005090214).

Almost surely, 2^400021155302 is an apocalyptic number.

400021155302 is a deficient number, since it is larger than the sum of its proper divisors (200019566410).

400021155302 is a wasteful number, since it uses less digits than its factorization.

400021155302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996254.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 400021155302 its reverse (203551120004), we get a palindrome (603572275306).

The spelling of 400021155302 in words is "four hundred billion, twenty-one million, one hundred fifty-five thousand, three hundred two".