1202220101 has 4 divisors (see below), whose sum is σ = 1230178752. Its totient is φ = 1174261452.

The previous prime is 1202220023. The next prime is 1202220133. The reversal of 1202220101 is 1010222021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202220101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202220301) 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, 13979261 + ... + 13979346.

It is an arithmetic number, because the mean of its divisors is an integer number (307544688).

Almost surely, 2^1202220101 is an apocalyptic number.

It is an amenable number.

1202220101 is a deficient number, since it is larger than the sum of its proper divisors (27958651).

1202220101 is an equidigital number, since it uses as much as digits as its factorization.

1202220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27958650.

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

The square root of 1202220101 is about 34673.0457416132. The cubic root of 1202220101 is about 1063.3135013864.

Adding to 1202220101 its reverse (1010222021), we get a palindrome (2212442122).

It can be divided in two parts, 12022 and 20101, that added together give a palindrome (32123).

The spelling of 1202220101 in words is "one billion, two hundred two million, two hundred twenty thousand, one hundred one".