11010101421 has 16 divisors (see below), whose sum is σ = 16240255488. Its totient is φ = 6578804400.

The previous prime is 11010101387. The next prime is 11010101423. The reversal of 11010101421 is 12410101011.

It is not a de Polignac number, because 11010101421 - 2⁷ = 11010101293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11010101397 and 11010101406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010101423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2347231 + ... + 2351916.

It is an arithmetic number, because the mean of its divisors is an integer number (1015015968).

Almost surely, 2^11010101421 is an apocalyptic number.

11010101421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11010101421 is a deficient number, since it is larger than the sum of its proper divisors (5230154067).

11010101421 is a wasteful number, since it uses less digits than its factorization.

11010101421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699232.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11010101421 its reverse (12410101011), we get a palindrome (23420202432).

The spelling of 11010101421 in words is "eleven billion, ten million, one hundred one thousand, four hundred twenty-one".