103011100101221 has 4 divisors (see below), whose sum is σ = 110935030878252. Its totient is φ = 95087169324192.

The previous prime is 103011100101199. The next prime is 103011100101251. The reversal of 103011100101221 is 122101001110301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26097937000996 + 76913163100225 = 5108614^2 + 8770015^2 .

It is a cyclic number.

It is not a de Polignac number, because 103011100101221 - 2⁴⁶ = 32642355923557 is a prime.

It is a super-2 number, since 2×103011100101221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103011100101196 and 103011100101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103011100101251) 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, 3961965388496 + ... + 3961965388521.

It is an arithmetic number, because the mean of its divisors is an integer number (27733757719563).

Almost surely, 2^{103011100101221} is an apocalyptic number.

It is an amenable number.

103011100101221 is a deficient number, since it is larger than the sum of its proper divisors (7923930777031).

103011100101221 is an equidigital number, since it uses as much as digits as its factorization.

103011100101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923930777030.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 103011100101221 its reverse (122101001110301), we get a palindrome (225112101211522).

The spelling of 103011100101221 in words is "one hundred three trillion, eleven billion, one hundred million, one hundred one thousand, two hundred twenty-one".