21220100121095 has 16 divisors (see below), whose sum is σ = 26285761452288. Its totient is φ = 16428328312320.

The previous prime is 21220100121071. The next prime is 21220100121119. The reversal of 21220100121095 is 59012100102212.

It is an interprime number because it is at equal distance from previous prime (21220100121071) and next prime (21220100121119).

It is not a de Polignac number, because 21220100121095 - 2²² = 21220095926791 is a prime.

It is a super-3 number, since 3×21220100121095³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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, 20747567 + ... + 21746303.

It is an arithmetic number, because the mean of its divisors is an integer number (1642860090768).

Almost surely, 2^{21220100121095} is an apocalyptic number.

21220100121095 is a deficient number, since it is larger than the sum of its proper divisors (5065661331193).

21220100121095 is a wasteful number, since it uses less digits than its factorization.

21220100121095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135850.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 21220100121095 in words is "twenty-one trillion, two hundred twenty billion, one hundred million, one hundred twenty-one thousand, ninety-five".