221223404042102 has 48 divisors (see below), whose sum is σ = 430063956292608. Its totient is φ = 84357086904720.

The previous prime is 221223404042101. The next prime is 221223404042107. The reversal of 221223404042102 is 201240404322122.

It is a super-2 number, since 2×221223404042102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221223404042101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2183103758 + ... + 2183205089.

It is an arithmetic number, because the mean of its divisors is an integer number (8959665756096).

Almost surely, 2^{221223404042102} is an apocalyptic number.

221223404042102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221223404042102 is a deficient number, since it is larger than the sum of its proper divisors (208840552250506).

221223404042102 is a wasteful number, since it uses less digits than its factorization.

221223404042102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366308921 (or 4366308914 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221223404042102 its reverse (201240404322122), we get a palindrome (422463808364224).

The spelling of 221223404042102 in words is "two hundred twenty-one trillion, two hundred twenty-three billion, four hundred four million, forty-two thousand, one hundred two".