101214021 has 8 divisors (see below), whose sum is σ = 136190560. Its totient is φ = 66856752.

The previous prime is 101213999. The next prime is 101214023. The reversal of 101214021 is 120412101.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-101214021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101213988 and 101214006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101214023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154435 + ... + 155088.

It is an arithmetic number, because the mean of its divisors is an integer number (17023820).

Almost surely, 2^101214021 is an apocalyptic number.

It is an amenable number.

101214021 is a deficient number, since it is larger than the sum of its proper divisors (34976539).

101214021 is a wasteful number, since it uses less digits than its factorization.

101214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309635.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 101214021 is about 10060.5179290134. The cubic root of 101214021 is about 466.0296618867.

Adding to 101214021 its reverse (120412101), we get a palindrome (221626122).

The spelling of 101214021 in words is "one hundred one million, two hundred fourteen thousand, twenty-one".