1220212102 has 8 divisors (see below), whose sum is σ = 1833605856.
Its totient is φ = 609010152.
The previous prime is 1220212093. The next prime is 1220212109. The reversal of 1220212102 is 2012120221.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1220212109) 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, 546558 + ... + 548785.
It is an arithmetic number, because the mean of its divisors is an integer number (229200732).
Almost surely, 21220212102 is an apocalyptic number.
1220212102 is a deficient number, since it is larger than the sum of its proper divisors (613393754).
1220212102 is a wasteful number, since it uses less digits than its factorization.
1220212102 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1095902.
The product of its (nonzero) digits is 32, while the sum is 13.
The square root of 1220212102 is about 34931.5344924897.
The cubic root of 1220212102 is about 1068.5916493183.
Adding to 1220212102 its reverse (2012120221), we get a palindrome (3232332323).
The spelling of 1220212102 in words is "one billion, two hundred twenty million, two hundred twelve thousand, one hundred two".