21000121011202 has 8 divisors (see below), whose sum is σ = 31501769047056. Its totient is φ = 10499531328852.

The previous prime is 21000121011173. The next prime is 21000121011251. The reversal of 21000121011202 is 20211012100012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21000121011202² (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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264538768 + ... + 264618139.

It is an arithmetic number, because the mean of its divisors is an integer number (3937721130882).

Almost surely, 2^{21000121011202} is an apocalyptic number.

21000121011202 is a deficient number, since it is larger than the sum of its proper divisors (10501648035854).

21000121011202 is a wasteful number, since it uses less digits than its factorization.

21000121011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529176752.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21000121011202 its reverse (20211012100012), we get a palindrome (41211133111214).

The spelling of 21000121011202 in words is "twenty-one trillion, one hundred twenty-one million, eleven thousand, two hundred two".