21010122100102 has 8 divisors (see below), whose sum is σ = 31537330155936. Its totient is φ = 10497678714792.

The previous prime is 21010122099937. The next prime is 21010122100141. The reversal of 21010122100102 is 20100122101012.

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

It is a super-2 number, since 2×21010122100102² (a number of 27 digits) contains 22 as substring.

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, 3691164073 + ... + 3691169764.

It is an arithmetic number, because the mean of its divisors is an integer number (3942166269492).

Almost surely, 2^{21010122100102} is an apocalyptic number.

21010122100102 is a deficient number, since it is larger than the sum of its proper divisors (10527208055834).

21010122100102 is a wasteful number, since it uses less digits than its factorization.

21010122100102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382335262.

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

Adding to 21010122100102 its reverse (20100122101012), we get a palindrome (41110244201114).

The spelling of 21010122100102 in words is "twenty-one trillion, ten billion, one hundred twenty-two million, one hundred thousand, one hundred two".