1011211101021 has 8 divisors (see below), whose sum is σ = 1470852510624. Its totient is φ = 612855212720.

The previous prime is 1011211101013. The next prime is 1011211101037. The reversal of 1011211101021 is 1201011121101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011211101021 - 2³ = 1011211101013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011211100988 and 1011211101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011211101421) 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, 15321380286 + ... + 15321380351.

It is an arithmetic number, because the mean of its divisors is an integer number (183856563828).

Almost surely, 2^{1011211101021} is an apocalyptic number.

1011211101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011211101021 is a deficient number, since it is larger than the sum of its proper divisors (459641409603).

1011211101021 is a wasteful number, since it uses less digits than its factorization.

1011211101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30642760651.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1011211101021 its reverse (1201011121101), we get a palindrome (2212222222122).

The spelling of 1011211101021 in words is "one trillion, eleven billion, two hundred eleven million, one hundred one thousand, twenty-one".