1221222201130 has 8 divisors (see below), whose sum is σ = 2198199962052. Its totient is φ = 488488880448.

The previous prime is 1221222201127. The next prime is 1221222201131. The reversal of 1221222201130 is 311022221221.

It can be written as a sum of positive squares in 2 ways, for example, as 1220996270169 + 225930961 = 1104987^2 + 15031^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1221222201098 and 1221222201107.

It is not an unprimeable number, because it can be changed into a prime (1221222201131) 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, 61061110047 + ... + 61061110066.

Almost surely, 2^{1221222201130} is an apocalyptic number.

1221222201130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221222201130 is a deficient number, since it is larger than the sum of its proper divisors (976977760922).

1221222201130 is a wasteful number, since it uses less digits than its factorization.

1221222201130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122122220120.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1221222201130 its reverse (311022221221), we get a palindrome (1532244422351).

The spelling of 1221222201130 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred thirty".