21342001000 has 32 divisors (see below), whose sum is σ = 49940284680. Its totient is φ = 8536800000.

The previous prime is 21342000961. The next prime is 21342001007. The reversal of 21342001000 is 10024312.

It can be written as a sum of positive squares in 4 ways, for example, as 6685024644 + 14656976356 = 81762^2 + 121066^2 .

It is not an unprimeable number, because it can be changed into a prime (21342001007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10670001 + ... + 10672000.

Almost surely, 2^21342001000 is an apocalyptic number.

21342001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21342001000 is an abundant number, since it is smaller than the sum of its proper divisors (28598283680).

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

21342001000 is a wasteful number, since it uses less digits than its factorization.

21342001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21342022 (or 21342008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21342001000 its reverse (10024312), we get a palindrome (21352025312).

The spelling of 21342001000 in words is "twenty-one billion, three hundred forty-two million, one thousand".