1212021101011 has 8 divisors (see below), whose sum is σ = 1466647382880. Its totient is φ = 977764921728.

The previous prime is 1212021101003. The next prime is 1212021101023. The reversal of 1212021101011 is 1101011202121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212021101011 - 2³ = 1212021101003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212021100982 and 1212021101000.

It is not an unprimeable number, because it can be changed into a prime (1212021101041) 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, 5092525516 + ... + 5092525753.

It is an arithmetic number, because the mean of its divisors is an integer number (183330922860).

Almost surely, 2^{1212021101011} is an apocalyptic number.

1212021101011 is a deficient number, since it is larger than the sum of its proper divisors (254626281869).

1212021101011 is a wasteful number, since it uses less digits than its factorization.

1212021101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10185051293.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212021101011 its reverse (1101011202121), we get a palindrome (2313032303132).

The spelling of 1212021101011 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred one thousand, eleven".