106106221651 has 4 divisors (see below), whose sum is σ = 106109646472. Its totient is φ = 106102796832.

The previous prime is 106106221649. The next prime is 106106221681. The reversal of 106106221651 is 156122601601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106106221651 - 2¹ = 106106221649 is a prime.

It is a super-2 number, since 2×106106221651² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106106221621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1665510 + ... + 1728043.

It is an arithmetic number, because the mean of its divisors is an integer number (26527411618).

Almost surely, 2^106106221651 is an apocalyptic number.

106106221651 is a deficient number, since it is larger than the sum of its proper divisors (3424821).

106106221651 is an equidigital number, since it uses as much as digits as its factorization.

106106221651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424820.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 106106221651 in words is "one hundred six billion, one hundred six million, two hundred twenty-one thousand, six hundred fifty-one".