21435052501002 has 32 divisors (see below), whose sum is σ = 48994917345792. Its totient is φ = 6124236760944.

The previous prime is 21435052500991. The next prime is 21435052501007. The reversal of 21435052501002 is 20010525053412.

It is a super-2 number, since 2×21435052501002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21435052501007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1481013 + ... + 6712935.

It is an arithmetic number, because the mean of its divisors is an integer number (1531091167056).

Almost surely, 2^{21435052501002} is an apocalyptic number.

21435052501002 is an abundant number, since it is smaller than the sum of its proper divisors (27559864844790).

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

21435052501002 is a wasteful number, since it uses less digits than its factorization.

21435052501002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329482.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 21435052501002 its reverse (20010525053412), we get a palindrome (41445577554414).

The spelling of 21435052501002 in words is "twenty-one trillion, four hundred thirty-five billion, fifty-two million, five hundred one thousand, two".