10211421111 has 8 divisors (see below), whose sum is σ = 14054429184. Its totient is φ = 6588013560.

The previous prime is 10211421109. The next prime is 10211421131. The reversal of 10211421111 is 11112411201.

It is a happy number.

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

It is not a de Polignac number, because 10211421111 - 2¹ = 10211421109 is a prime.

It is a super-2 number, since 2×10211421111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211421131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 54900021 + ... + 54900206.

It is an arithmetic number, because the mean of its divisors is an integer number (1756803648).

Almost surely, 2^10211421111 is an apocalyptic number.

10211421111 is a deficient number, since it is larger than the sum of its proper divisors (3843008073).

10211421111 is a wasteful number, since it uses less digits than its factorization.

10211421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109800261.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10211421111 its reverse (11112411201), we get a palindrome (21323832312).

The spelling of 10211421111 in words is "ten billion, two hundred eleven million, four hundred twenty-one thousand, one hundred eleven".