22401012020 has 12 divisors (see below), whose sum is σ = 47042125284. Its totient is φ = 8960404800.

The previous prime is 22401011999. The next prime is 22401012059. The reversal of 22401012020 is 2021010422.

It can be written as a sum of positive squares in 2 ways, for example, as 12348543376 + 10052468644 = 111124^2 + 100262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22401011986 and 22401012004.

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, 560025281 + ... + 560025320.

It is an arithmetic number, because the mean of its divisors is an integer number (3920177107).

Almost surely, 2^22401012020 is an apocalyptic number.

22401012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22401012020 is an abundant number, since it is smaller than the sum of its proper divisors (24641113264).

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

22401012020 is a wasteful number, since it uses less digits than its factorization.

22401012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120050610 (or 1120050608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22401012020 its reverse (2021010422), we get a palindrome (24422022442).

The spelling of 22401012020 in words is "twenty-two billion, four hundred one million, twelve thousand, twenty".