1211012102 has 32 divisors (see below), whose sum is σ = 2003292000. Its totient is φ = 546477568.

The previous prime is 1211012083. The next prime is 1211012107. The reversal of 1211012102 is 2012101121.

It is a super-2 number, since 2×1211012102² = 2933100622380916808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142793 + ... + 151035.

It is an arithmetic number, because the mean of its divisors is an integer number (62602875).

Almost surely, 2^1211012102 is an apocalyptic number.

1211012102 is a deficient number, since it is larger than the sum of its proper divisors (792279898).

1211012102 is a wasteful number, since it uses less digits than its factorization.

1211012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8440.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1211012102 is about 34799.5991643582. The cubic root of 1211012102 is about 1065.8992608967.

Adding to 1211012102 its reverse (2012101121), we get a palindrome (3223113223).

The spelling of 1211012102 in words is "one billion, two hundred eleven million, twelve thousand, one hundred two".