1021101212 has 24 divisors (see below), whose sum is σ = 1806604800. Its totient is φ = 504941616.

The previous prime is 1021101199. The next prime is 1021101217. The reversal of 1021101212 is 2121011201.

It is a junction number, because it is equal to n+sod(n) for n = 1021101193 and 1021101202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021101217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542489 + ... + 544367.

It is an arithmetic number, because the mean of its divisors is an integer number (75275200).

Almost surely, 2^1021101212 is an apocalyptic number.

It is an amenable number.

1021101212 is a deficient number, since it is larger than the sum of its proper divisors (785503588).

1021101212 is a wasteful number, since it uses less digits than its factorization.

1021101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305 (or 3303 counting only the distinct ones).

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

The square root of 1021101212 is about 31954.6743372546. The cubic root of 1021101212 is about 1006.9848358101.

Adding to 1021101212 its reverse (2121011201), we get a palindrome (3142112413).

The spelling of 1021101212 in words is "one billion, twenty-one million, one hundred one thousand, two hundred twelve".