21011021023002 has 32 divisors (see below), whose sum is σ = 43930139425920. Its totient is φ = 6686783167680.

The previous prime is 21011021022997. The next prime is 21011021023093. The reversal of 21011021023002 is 20032012011012.

It is a super-2 number, since 2×21011021023002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140640477 + ... + 140789792.

It is an arithmetic number, because the mean of its divisors is an integer number (1372816857060).

Almost surely, 2^{21011021023002} is an apocalyptic number.

21011021023002 is an abundant number, since it is smaller than the sum of its proper divisors (22919118402918).

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

21011021023002 is a wasteful number, since it uses less digits than its factorization.

21011021023002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281430838.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21011021023002 its reverse (20032012011012), we get a palindrome (41043033034014).

The spelling of 21011021023002 in words is "twenty-one trillion, eleven billion, twenty-one million, twenty-three thousand, two".