1220011402 has 8 divisors (see below), whose sum is σ = 1909583136. Its totient is φ = 583483692.

The previous prime is 1220011391. The next prime is 1220011487. The reversal of 1220011402 is 2041100221.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13260948 + ... + 13261039.

It is an arithmetic number, because the mean of its divisors is an integer number (238697892).

Almost surely, 2^1220011402 is an apocalyptic number.

1220011402 is a deficient number, since it is larger than the sum of its proper divisors (689571734).

1220011402 is a wasteful number, since it uses less digits than its factorization.

1220011402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26522012.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1220011402 is about 34928.6616119198. The cubic root of 1220011402 is about 1068.5330589298.

Adding to 1220011402 its reverse (2041100221), we get a palindrome (3261111623).

The spelling of 1220011402 in words is "one billion, two hundred twenty million, eleven thousand, four hundred two".