1011020002121 has 8 divisors (see below), whose sum is σ = 1064329408320. Its totient is φ = 957720378672.

The previous prime is 1011020002099. The next prime is 1011020002189. The reversal of 1011020002121 is 1212000201101.

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 1011020002121 - 2²² = 1011015807817 is a prime.

It is a super-2 number, since 2×1011020002121² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011020004121) 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, 2233070 + ... + 2647383.

It is an arithmetic number, because the mean of its divisors is an integer number (133041176040).

Almost surely, 2^{1011020002121} is an apocalyptic number.

It is an amenable number.

1011020002121 is a deficient number, since it is larger than the sum of its proper divisors (53309406199).

1011020002121 is a wasteful number, since it uses less digits than its factorization.

1011020002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891375.

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

Adding to 1011020002121 its reverse (1212000201101), we get a palindrome (2223020203222).

The spelling of 1011020002121 in words is "one trillion, eleven billion, twenty million, two thousand, one hundred twenty-one".