1020102012111 has 32 divisors (see below), whose sum is σ = 1674448634880. Its totient is φ = 537935940864.

The previous prime is 1020102012109. The next prime is 1020102012113. The reversal of 1020102012111 is 1112102010201.

It is an interprime number because it is at equal distance from previous prime (1020102012109) and next prime (1020102012113).

It is not a de Polignac number, because 1020102012111 - 2¹ = 1020102012109 is a prime.

It is a super-2 number, since 2×1020102012111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020102012113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 570955 + ... + 1538243.

It is an arithmetic number, because the mean of its divisors is an integer number (52326519840).

Almost surely, 2^{1020102012111} is an apocalyptic number.

1020102012111 is a deficient number, since it is larger than the sum of its proper divisors (654346622769).

1020102012111 is a wasteful number, since it uses less digits than its factorization.

1020102012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971175.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1020102012111 its reverse (1112102010201), we get a palindrome (2132204022312).

The spelling of 1020102012111 in words is "one trillion, twenty billion, one hundred two million, twelve thousand, one hundred eleven".