21122011195 has 8 divisors (see below), whose sum is σ = 25358856480. Its totient is φ = 16889313600.

The previous prime is 21122011193. The next prime is 21122011201. The reversal of 21122011195 is 59111022112.

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

It is not a de Polignac number, because 21122011195 - 2¹ = 21122011193 is a prime.

It is a super-2 number, since 2×21122011195² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122011193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025706 + ... + 1046095.

It is an arithmetic number, because the mean of its divisors is an integer number (3169857060).

Almost surely, 2^21122011195 is an apocalyptic number.

21122011195 is a deficient number, since it is larger than the sum of its proper divisors (4236845285).

21122011195 is a wasteful number, since it uses less digits than its factorization.

21122011195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2073845.

The product of its (nonzero) digits is 360, while the sum is 25.

The spelling of 21122011195 in words is "twenty-one billion, one hundred twenty-two million, eleven thousand, one hundred ninety-five".