1201021102 has 4 divisors (see below), whose sum is σ = 1801531656. Its totient is φ = 600510550.

The previous prime is 1201021069. The next prime is 1201021111. The reversal of 1201021102 is 2011201021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2011201021 = 379 ⋅5306599.

It is a super-3 number, since 3×1201021102³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300255274 + ... + 300255277.

It is an arithmetic number, because the mean of its divisors is an integer number (450382914).

Almost surely, 2^1201021102 is an apocalyptic number.

1201021102 is a deficient number, since it is larger than the sum of its proper divisors (600510554).

1201021102 is an equidigital number, since it uses as much as digits as its factorization.

1201021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600510553.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1201021102 is about 34655.7513552945. The cubic root of 1201021102 is about 1062.9598956169.

Adding to 1201021102 its reverse (2011201021), we get a palindrome (3212222123).

The spelling of 1201021102 in words is "one billion, two hundred one million, twenty-one thousand, one hundred two".