1200012211102 has 4 divisors (see below), whose sum is σ = 1800018316656. Its totient is φ = 600006105550.

The previous prime is 1200012211091. The next prime is 1200012211127. The reversal of 1200012211102 is 2011122100021.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1200012211102² (a number of 25 digits) contains 22 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, 300003052774 + ... + 300003052777.

It is an arithmetic number, because the mean of its divisors is an integer number (450004579164).

Almost surely, 2^{1200012211102} is an apocalyptic number.

1200012211102 is a deficient number, since it is larger than the sum of its proper divisors (600006105554).

1200012211102 is an equidigital number, since it uses as much as digits as its factorization.

1200012211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600006105553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200012211102 its reverse (2011122100021), we get a palindrome (3211134311123).

The spelling of 1200012211102 in words is "one trillion, two hundred billion, twelve million, two hundred eleven thousand, one hundred two".