1012121102 has 4 divisors (see below), whose sum is σ = 1518181656. Its totient is φ = 506060550.

The previous prime is 1012121081. The next prime is 1012121113. The reversal of 1012121102 is 2011212101.

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

It is a super-2 number, since 2×1012121102² = 2048778250227388808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253030274 + ... + 253030277.

It is an arithmetic number, because the mean of its divisors is an integer number (379545414).

Almost surely, 2^1012121102 is an apocalyptic number.

1012121102 is a deficient number, since it is larger than the sum of its proper divisors (506060554).

1012121102 is an equidigital number, since it uses as much as digits as its factorization.

1012121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506060553.

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

The square root of 1012121102 is about 31813.8507886109. The cubic root of 1012121102 is about 1004.0241518134.

Adding to 1012121102 its reverse (2011212101), we get a palindrome (3023333203).

Subtracting 1012121102 from its reverse (2011212101), we obtain a palindrome (999090999).

The spelling of 1012121102 in words is "one billion, twelve million, one hundred twenty-one thousand, one hundred two".