1102220021 has 8 divisors (see below), whose sum is σ = 1272667200. Its totient is φ = 935019648.

The previous prime is 1102220003. The next prime is 1102220027. The reversal of 1102220021 is 1200222011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1102220021 - 2⁶ = 1102219957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1102219984 and 1102220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102220027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810971 + ... + 812328.

It is an arithmetic number, because the mean of its divisors is an integer number (159083400).

Almost surely, 2^1102220021 is an apocalyptic number.

It is an amenable number.

1102220021 is a deficient number, since it is larger than the sum of its proper divisors (170447179).

1102220021 is an equidigital number, since it uses as much as digits as its factorization.

1102220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623403.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1102220021 is about 33199.6991100823. The cubic root of 1102220021 is about 1032.9740983557.

Adding to 1102220021 its reverse (1200222011), we get a palindrome (2302442032).

The spelling of 1102220021 in words is "one billion, one hundred two million, two hundred twenty thousand, twenty-one".