1401021022440 has 128 divisors (see below), whose sum is σ = 4792633090560. Its totient is φ = 324580429824.

The previous prime is 1401021022433. The next prime is 1401021022483. The reversal of 1401021022440 is 442201201041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26387904 + ... + 26440943.

It is an arithmetic number, because the mean of its divisors is an integer number (37442446020).

Almost surely, 2^{1401021022440} is an apocalyptic number.

1401021022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401021022440 is an abundant number, since it is smaller than the sum of its proper divisors (3391612068120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401021022440 is a wasteful number, since it uses less digits than its factorization.

1401021022440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52828891 (or 52828887 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1401021022440 its reverse (442201201041), we get a palindrome (1843222223481).

The spelling of 1401021022440 in words is "one trillion, four hundred one billion, twenty-one million, twenty-two thousand, four hundred forty".